diff --git a/libs/horizon/src/dom/DOMInternalKeys.ts b/libs/horizon/src/dom/DOMInternalKeys.ts
index 068eb829..d7d78573 100644
--- a/libs/horizon/src/dom/DOMInternalKeys.ts
+++ b/libs/horizon/src/dom/DOMInternalKeys.ts
@@ -14,14 +14,13 @@ import {
   TreeRoot,
 } from '../renderer/vnode/VNodeTags';
 
-const suffixKey = new Date().getTime().toString();
 const prefix = '_horizon';
 
 const internalKeys = {
-  VNode: `${prefix}VNode@${suffixKey}`,
-  props: `${prefix}Props@${suffixKey}`,
-  events: `${prefix}Events@${suffixKey}`,
-  nonDelegatedEvents: `${prefix}NonDelegatedEvents@${suffixKey}`,
+  VNode: `${prefix}VNode`,
+  props: `${prefix}Props`,
+  events: `${prefix}Events`,
+  nonDelegatedEvents: `${prefix}NonDelegatedEvents`,
 };
 
 // 通过 VNode 实例获取 DOM 节点
diff --git a/libs/horizon/src/dom/SelectionRangeHandler.ts b/libs/horizon/src/dom/SelectionRangeHandler.ts
index d4f98942..f5bde5bf 100644
--- a/libs/horizon/src/dom/SelectionRangeHandler.ts
+++ b/libs/horizon/src/dom/SelectionRangeHandler.ts
@@ -73,6 +73,7 @@ function isInDocument(dom) {
   if (dom && dom.ownerDocument) {
     return isNodeContainsByTargetNode(dom.ownerDocument.documentElement, dom);
   }
+  return false;
 }
 
 // 判断一个标签是否有设置选择范围的能力
diff --git a/libs/horizon/src/dom/valueHandler/ValueChangeHandler.ts b/libs/horizon/src/dom/valueHandler/ValueChangeHandler.ts
index 35d31e20..34406ef8 100644
--- a/libs/horizon/src/dom/valueHandler/ValueChangeHandler.ts
+++ b/libs/horizon/src/dom/valueHandler/ValueChangeHandler.ts
@@ -34,12 +34,12 @@ export function watchValueChange(dom) {
     // currentVal存储最新值，并重写value的setter、getter
     let currentVal = String(dom[keyForValue]);
 
-    const setFunc = descriptor.set;
+    const setFunc = descriptor?.set;
     Object.defineProperty(dom, keyForValue, {
       ...descriptor,
-      set: function (value) {
+      set: function(value) {
         currentVal = String(value);
-        setFunc.apply(this, [value]);
+        setFunc?.apply(this, [value]);
       },
     });
 
diff --git a/libs/horizon/src/external/ChildrenUtil.ts b/libs/horizon/src/external/ChildrenUtil.ts
index 179cf73e..c5eff12e 100644
--- a/libs/horizon/src/external/ChildrenUtil.ts
+++ b/libs/horizon/src/external/ChildrenUtil.ts
@@ -1,7 +1,7 @@
 import {throwIfTrue} from '../renderer/utils/throwIfTrue';
-import {TYPE_ELEMENT, TYPE_PORTAL} from '../renderer/utils/elementType';
+import {TYPE_COMMON_ELEMENT, TYPE_PORTAL} from './JSXElementType';
 
-import {isValidElement, HorizonElement} from './HorizonElement';
+import {isValidElement, JSXElement} from './JSXElement';
 
 // 生成key
 function getItemKey(item: any, index: number): string {
@@ -12,45 +12,6 @@ function getItemKey(item: any, index: number): string {
   return '.' + index.toString(36);
 }
 
-function mapChildrenToArray(
-  children: any,
-  arr: Array<any>,
-  prefix: string,
-  callback?: Function,
-): number | void {
-  const type = typeof children;
-  switch (type) {
-    // 继承原有规格，undefined和boolean类型按照null处理
-    case 'undefined':
-    case 'boolean':
-      callMapFun(null, arr, prefix, callback);
-      return;
-    case 'number':
-    case 'string':
-      callMapFun(children, arr, prefix, callback);
-      return;
-    case 'object':
-      if (children === null) {
-        callMapFun(null, arr, prefix, callback);
-        return;
-      }
-      const vtype = children.vtype;
-      if (vtype === TYPE_ELEMENT || vtype === TYPE_PORTAL) {
-        callMapFun(children, arr, prefix, callback) ;
-        return;
-      }
-      if (Array.isArray(children)) {
-        processArrayChildren(children, arr, prefix, callback);
-        return;
-      }
-      throw new Error(
-        'Object is invalid as a Horizon child. '
-      );
-    default:
-      return;
-  }
-}
-
 function processArrayChildren(
   children: any,
   arr: Array<any>,
@@ -88,11 +49,11 @@ function callMapFun(
         ? '.$' + mappedChild.key
         : '');
       // 返回一个修改key的children
-      mappedChild = HorizonElement(
+      mappedChild = JSXElement(
         mappedChild.type,
         newKey,
         mappedChild.ref,
-        mappedChild._vNode,
+        mappedChild.belongClassVNode,
         mappedChild.props,
       );
     }
@@ -100,6 +61,44 @@ function callMapFun(
   }
 }
 
+function mapChildrenToArray(
+  children: any,
+  arr: Array<any>,
+  prefix: string,
+  callback?: Function,
+): number | void {
+  const type = typeof children;
+  switch (type) {
+    // 继承原有规格，undefined和boolean类型按照null处理
+    case 'undefined':
+    case 'boolean':
+      callMapFun(null, arr, prefix, callback);
+      return;
+    case 'number':
+    case 'string':
+      callMapFun(children, arr, prefix, callback);
+      return;
+    case 'object':
+      if (children === null) {
+        callMapFun(null, arr, prefix, callback);
+        return;
+      }
+      const vtype = children.vtype;
+      if (vtype === TYPE_COMMON_ELEMENT || vtype === TYPE_PORTAL) {
+        callMapFun(children, arr, prefix, callback) ;
+        return;
+      }
+      if (Array.isArray(children)) {
+        processArrayChildren(children, arr, prefix, callback);
+        return;
+      }
+      throw new Error(
+        'Object is invalid as a Horizon child. '
+      );
+    // No Default
+  }
+}
+
 // 在 children 里的每个直接子节点上调用一个函数，并将 this 设置为 thisArg
 function mapChildren(
   children: any,
@@ -111,9 +110,7 @@ function mapChildren(
   }
   let count = 0;
   const result = [];
-  mapChildrenToArray(children, result, '', (child) => {
-    return func.call(context, child, count++);
-  });
+  mapChildrenToArray(children, result, '', child => func.call(context, child, count++));
   return result;
 }
 
diff --git a/libs/horizon/src/external/Horizon.ts b/libs/horizon/src/external/Horizon.ts
index 8c933c80..623bfbb4 100644
--- a/libs/horizon/src/external/Horizon.ts
+++ b/libs/horizon/src/external/Horizon.ts
@@ -3,7 +3,7 @@ import {
   TYPE_PROFILER,
   TYPE_STRICT_MODE,
   TYPE_SUSPENSE,
-} from '../renderer/utils/elementType';
+} from './JSXElementType';
 
 import {Component, PureComponent} from '../renderer/components/BaseClassComponent';
 import {createRef} from '../renderer/components/CreateRef';
@@ -12,7 +12,7 @@ import {
   createElement,
   cloneElement,
   isValidElement,
-} from './HorizonElement';
+} from './JSXElement';
 import {createContext} from '../renderer/components/context/CreateContext';
 import {lazy} from '../renderer/components/Lazy';
 import {forwardRef} from '../renderer/components/ForwardRef';
diff --git a/libs/horizon/src/external/HorizonElement.ts b/libs/horizon/src/external/JSXElement.ts
similarity index 70%
rename from libs/horizon/src/external/HorizonElement.ts
rename to libs/horizon/src/external/JSXElement.ts
index 186f343c..f0218ac9 100644
--- a/libs/horizon/src/external/HorizonElement.ts
+++ b/libs/horizon/src/external/JSXElement.ts
@@ -1,18 +1,18 @@
-import { TYPE_ELEMENT } from '../renderer/utils/elementType';
-import ProcessingVNode from '../renderer/vnode/ProcessingVNode';
+import { TYPE_COMMON_ELEMENT } from './JSXElementType';
+import { getProcessingClassVNode } from '../renderer/GlobalVar';
 
 
 /**
- * vtype， 节点的类型，这里固定是element
- * type,保存dom节点的名称或者组件的函数地址
+ * vtype 节点的类型，这里固定是element
+ * type 保存dom节点的名称或者组件的函数地址
  * key key属性
  * ref ref属性
  * props 其他常规属性
  */
-export function HorizonElement(type, key, ref, vNode, props) {
+export function JSXElement(type, key, ref, vNode, props) {
   return {
-    // Horizon元素标识符
-    vtype: TYPE_ELEMENT,
+    // 元素标识符
+    vtype: TYPE_COMMON_ELEMENT,
 
     // 属于元素的内置属性
     type: type,
@@ -20,50 +20,15 @@ export function HorizonElement(type, key, ref, vNode, props) {
     ref: ref,
     props: props,
 
-    // 记录负责创建此元素的组件。
-    _vNode: vNode,
+    // 所属的class组件
+    belongClassVNode: vNode,
   };
-};
+}
 
 function isValidKey(key) {
   return key !== 'key' && key !== 'ref' && key !== '__source';
 }
 
-function buildElement(isClone, type, setting, ...children) {
-  // setting中的值优先级最高，clone情况下从 type 中取值，创建情况下直接赋值为 null
-  const key = (setting && setting.key !== undefined) ? String(setting.key) : (isClone ? type.key : null);
-  const ref = (setting && setting.ref !== undefined) ? setting.ref : (isClone ? type.ref : null);
-  const props = isClone ? {...type.props} : {};
-  let vNode = isClone ? type._vNode : ProcessingVNode.val;
-
-  if (setting != null) {
-    Object.keys(setting).forEach(k => {
-      if (isValidKey(k)) {
-        props[k] = setting[k];
-      }
-    });
-    if (setting.ref !== undefined && isClone) {
-      vNode = ProcessingVNode.val;
-    }
-  }
-
-  if (children.length) {
-    props.children = children.length === 1 ? children[0] : children;
-  }
-  const element = isClone ? type.type : type;
-  //合并默认属性
-  if (element && element.defaultProps) {
-    mergeDefault(props, element.defaultProps);
-  }
-
-  return HorizonElement(element, key, ref, vNode, props);
-}
-
-//创建Element结构体，供JSX编译时调用
-export function createElement(type, setting, ...children) {
-  return buildElement(false, type, setting, ...children);
-}
-
 function mergeDefault(sourceObj, defaultObj) {
   Object.keys(defaultObj).forEach((key) => {
     if (sourceObj[key] === undefined) {
@@ -72,11 +37,46 @@ function mergeDefault(sourceObj, defaultObj) {
   });
 }
 
+function buildElement(isClone, type, setting, ...children) {
+  // setting中的值优先级最高，clone情况下从 type 中取值，创建情况下直接赋值为 null
+  const key = (setting && setting.key !== undefined) ? String(setting.key) : (isClone ? type.key : null);
+  const ref = (setting && setting.ref !== undefined) ? setting.ref : (isClone ? type.ref : null);
+  const props = isClone ? {...type.props} : {};
+  let vNode = isClone ? type.belongClassVNode : getProcessingClassVNode();
+
+  if (setting != null) {
+    Object.keys(setting).forEach(k => {
+      if (isValidKey(k)) {
+        props[k] = setting[k];
+      }
+    });
+    if (setting.ref !== undefined && isClone) {
+      vNode = getProcessingClassVNode();
+    }
+  }
+
+  if (children.length) {
+    props.children = children.length === 1 ? children[0] : children;
+  }
+  const element = isClone ? type.type : type;
+  // 合并默认属性
+  if (element && element.defaultProps) {
+    mergeDefault(props, element.defaultProps);
+  }
+
+  return JSXElement(element, key, ref, vNode, props);
+}
+
+// 创建Element结构体，供JSX编译时调用
+export function createElement(type, setting, ...children) {
+  return buildElement(false, type, setting, ...children);
+}
+
 export function cloneElement(element, setting, ...children) {
   return buildElement(true, element, setting, ...children);
 }
 
 // 检测结构体是否为合法的Element
 export function isValidElement(element) {
-  return !!(element && element.vtype === TYPE_ELEMENT);
+  return !!(element && element.vtype === TYPE_COMMON_ELEMENT);
 }
diff --git a/libs/horizon/src/renderer/utils/elementType.ts b/libs/horizon/src/external/JSXElementType.ts
similarity index 89%
rename from libs/horizon/src/renderer/utils/elementType.ts
rename to libs/horizon/src/external/JSXElementType.ts
index b23ad4d6..b692f39a 100644
--- a/libs/horizon/src/renderer/utils/elementType.ts
+++ b/libs/horizon/src/external/JSXElementType.ts
@@ -1,4 +1,4 @@
-export const TYPE_ELEMENT = 1;
+export const TYPE_COMMON_ELEMENT = 1;
 export const TYPE_PORTAL = 2;
 export const TYPE_FRAGMENT = 3;
 export const TYPE_STRICT_MODE = 4;
diff --git a/libs/horizon/src/renderer/ExecuteMode.ts b/libs/horizon/src/renderer/ExecuteMode.ts
index 880e9374..68c6f2c1 100644
--- a/libs/horizon/src/renderer/ExecuteMode.ts
+++ b/libs/horizon/src/renderer/ExecuteMode.ts
@@ -5,7 +5,7 @@ export const InRender = 'IN_RENDER';
 
 type RenderMode = typeof ByAsync | typeof BySync | typeof InRender;
 
-// 当前执行阶段标记
+// 当前执行模式标记
 let executeMode = {
   [ByAsync]: false,
   [BySync]: false,
diff --git a/libs/horizon/src/renderer/GlobalVar.ts b/libs/horizon/src/renderer/GlobalVar.ts
new file mode 100644
index 00000000..e7ea335c
--- /dev/null
+++ b/libs/horizon/src/renderer/GlobalVar.ts
@@ -0,0 +1,34 @@
+import type {VNode} from './Types';
+
+// 当前处理的classVNode，用于inst.refs用法中的
+let processingClassVNode: VNode | null = null;
+export function getProcessingClassVNode(): VNode | null {
+  return processingClassVNode;
+}
+export function setProcessingClassVNode(vNode: VNode | null) {
+  processingClassVNode = vNode;
+}
+
+// 计算出来的刷新节点，不一定是根节点
+let startVNode: VNode | null = null;
+export function getStartVNode(): VNode | null {
+  return startVNode;
+}
+export function setStartVNode(vNode: VNode | null) {
+  startVNode = vNode;
+}
+
+type BuildVNodeResult = 0 | 1 | 2 | 3;
+export const BuildInComplete = 0;
+export const BuildFatalErrored = 1;
+export const BuildErrored = 2;
+export const BuildCompleted = 3;
+// 根节点退出build tree时的状态，如: completed, incomplete, errored, fatalErrored.
+let buildVNodeResult: BuildVNodeResult = BuildInComplete;
+export function setBuildResult(result: BuildVNodeResult) {
+  buildVNodeResult = result;
+}
+
+export function getBuildResult(): BuildVNodeResult {
+  return buildVNodeResult;
+}
diff --git a/libs/horizon/src/renderer/Renderer.ts b/libs/horizon/src/renderer/Renderer.ts
index 60ac72da..d5cf89da 100644
--- a/libs/horizon/src/renderer/Renderer.ts
+++ b/libs/horizon/src/renderer/Renderer.ts
@@ -1,5 +1,5 @@
-import type {VNode} from './Types';
-import type {Update} from './UpdateHandler';
+import type { VNode } from './Types';
+import type { Update } from './UpdateHandler';
 
 import {
   asyncUpdates,
@@ -7,12 +7,12 @@ import {
   runDiscreteUpdates,
   launchUpdateFromVNode,
 } from './TreeBuilder';
-import {runAsyncEffects} from './submit/HookEffectHandler';
-import {Callback, newUpdate, pushUpdate} from './UpdateHandler';
-import {getFirstChild} from './vnode/VNodeUtils';
+import { runAsyncEffects } from './submit/HookEffectHandler';
+import { Callback, newUpdate, pushUpdate } from './UpdateHandler';
+import { getFirstChild } from './vnode/VNodeUtils';
 
-export {createVNode} from './vnode/VNodeCreator';
-export {createPortal} from './components/CreatePortal';
+export { createVNode } from './vnode/VNodeCreator';
+export { createPortal } from './components/CreatePortal';
 export {
   asyncUpdates,
   syncUpdates,
@@ -26,7 +26,7 @@ export function startUpdate(
   callback?: Callback,
 ) {
   const update: Update = newUpdate();
-  update.content = {element};
+  update.content = { element };
 
   if (typeof callback === 'function') {
     update.callback = callback;
@@ -37,11 +37,10 @@ export function startUpdate(
   launchUpdateFromVNode(treeRoot);
 }
 
-export function getFirstCustomDom(treeRoot: VNode): Element | Text | null {
-  if (!treeRoot.child) {
-    return null;
+export function getFirstCustomDom(treeRoot?: VNode | null): Element | Text | null {
+  if (treeRoot?.child) {
+    return treeRoot.child.realNode;
   }
-
-  return treeRoot.child.realNode;
+  return null;
 }
 
diff --git a/libs/horizon/src/renderer/TreeBuilder.ts b/libs/horizon/src/renderer/TreeBuilder.ts
index cc0e5ba0..a84b5c3d 100644
--- a/libs/horizon/src/renderer/TreeBuilder.ts
+++ b/libs/horizon/src/renderer/TreeBuilder.ts
@@ -1,16 +1,24 @@
-import type {VNode} from './Types';
+import type { VNode } from './Types';
 
-import {callRenderQueueImmediate, pushRenderCallback} from './taskExecutor/RenderQueue';
-import {updateVNode} from './vnode/VNodeCreator';
-import {TreeRoot} from './vnode/VNodeTags';
-import {FlagUtils} from './vnode/VNodeFlags';
-import {captureVNode} from './render/BaseComponent';
-import {checkLoopingUpdateLimit, submitToRender} from './submit/Submit';
-import {runAsyncEffects} from './submit/HookEffectHandler';
-import {handleRenderThrowError} from './ErrorHandler';
+import { callRenderQueueImmediate, pushRenderCallback } from './taskExecutor/RenderQueue';
+import { updateVNode } from './vnode/VNodeCreator';
+import { TreeRoot } from './vnode/VNodeTags';
+import { FlagUtils } from './vnode/VNodeFlags';
+import { captureVNode } from './render/BaseComponent';
+import { checkLoopingUpdateLimit, submitToRender } from './submit/Submit';
+import { runAsyncEffects } from './submit/HookEffectHandler';
+import { handleRenderThrowError } from './ErrorHandler';
 import componentRenders from './render';
-import ProcessingVNode from './vnode/ProcessingVNode';
-import {findDomParent, getSiblingVNode} from './vnode/VNodeUtils';
+import {
+  BuildCompleted, BuildErrored,
+  BuildFatalErrored,
+  BuildInComplete, getBuildResult,
+  getStartVNode,
+  setBuildResult,
+  setProcessingClassVNode,
+  setStartVNode
+} from './GlobalVar';
+import { findDomParent, getSiblingVNode } from './vnode/VNodeUtils';
 import {
   ByAsync,
   BySync,
@@ -21,172 +29,23 @@ import {
   isExecuting,
   setExecuteMode
 } from './ExecuteMode';
-import {recoverParentsContextCtx, resetNamespaceCtx, setNamespaceCtx} from './ContextSaver';
+import { recoverParentsContextCtx, resetNamespaceCtx, setNamespaceCtx } from './ContextSaver';
 import {
   updateChildShouldUpdate,
   updateParentsChildShouldUpdate,
   updateShouldUpdateOfTree
 } from './vnode/VNodeShouldUpdate';
 
-type BuildVNodeResult = 0 | 1 | 2 | 3;
-const BuildInComplete = 0;
-const BuildFatalErrored = 1;
-const BuildErrored = 2;
-const BuildCompleted = 3;
-
 // 当前运行的vNode节点
 let processing: VNode | null = null;
-// 根节点退出build tree时的状态，如: completed, incomplete, errored, fatalErrored.
-let buildVNodeResult: BuildVNodeResult = BuildInComplete;
+
 // 不可恢复错误
 let unrecoverableErrorDuringBuild: any = null;
 
-function setBuildResult(result: BuildVNodeResult) {
-  buildVNodeResult = result;
-}
-
-function getBuildResult(): BuildVNodeResult {
-  return buildVNodeResult;
-}
-
 export function setProcessing(vNode: VNode | null) {
   processing = vNode;
 }
 
-let startVNode: VNode | null = null;
-export function getStartVNode(): VNode | null {
-  return startVNode;
-}
-export function setStartVNode(vNode: VNode | null) {
-  startVNode = vNode;
-}
-
-// 发起更新
-export function launchUpdateFromVNode(vNode: VNode) {
-  // 检查循环调用
-  checkLoopingUpdateLimit();
-
-  // 从当前vNode向上遍历到根节点，修改vNode.shouldUpdate和parent.childShouldUpdate
-  const treeRoot = updateShouldUpdateOfTree(vNode);
-  if (treeRoot === null) {
-    // 可能场景是：the componentWillUnmount method 或 useEffect cleanup function 方法中写异步任务，并且修改state。
-    // 因为异步回调的时候root都可能被清除了。
-    return null;
-  }
-
-  // 保存待刷新的节点
-  treeRoot.toUpdateNodes.add(vNode);
-
-  if (checkMode(BySync) && // 非批量
-    !checkMode(InRender)) { // 不是渲染阶段触发
-
-    // 业务直接调用Horizon.render的时候会进入这个分支，同步渲染。
-    // 不能改成下面的异步，否则会有时序问题，因为业务可能会依赖这个渲染的完成。
-    renderFromRoot(treeRoot);
-  } else {
-    tryRenderRoot(treeRoot);
-
-    if (!isExecuting()) {
-      // 同步执行
-      callRenderQueueImmediate();
-    }
-  }
-}
-
-// 从多个更新节点中，计算出开始节点。即：找到最近的共同的父辈节点
-export function calcStartUpdateVNode(treeRoot: VNode) {
-  const toUpdateNodes = Array.from(treeRoot.toUpdateNodes);
-
-  if (toUpdateNodes.length === 0) {
-    return treeRoot;
-  }
-
-  if (toUpdateNodes.length === 1) {
-    return toUpdateNodes[0];
-  }
-
-  // 要计算的节点过多，直接返回根节点
-  if (toUpdateNodes.length > 100) {
-    return treeRoot;
-  }
-
-  // 找到路径最短的长度
-  let minPath = toUpdateNodes[0].path.length;
-  for (let i = 1; i < toUpdateNodes.length; i++) {
-    let pathLen = toUpdateNodes[i].path.length;
-    if (pathLen < minPath) {
-      minPath = pathLen;
-    }
-  }
-
-  // 找出开始不相等的idx
-  let idx = 0;
-  for (; idx < minPath; idx++) {
-    if (!isEqualByIndex(idx, toUpdateNodes)) {
-      break;
-    }
-  }
-  // 得到相等的路径
-  let startNodePath = toUpdateNodes[0].path.slice(0, idx);
-
-  let node = treeRoot;
-  for (let i = 1; i < startNodePath.length; i++) {
-    let pathIndex = startNodePath[i];
-    node = getChildByIndex(node, pathIndex);
-  }
-
-  return node;
-}
-
-function getChildByIndex(vNode: VNode, idx: number) {
-  let node = vNode.child;
-  for (let i = 0; i < idx; i++) {
-    node = node.next;
-  }
-  return node;
-}
-
-// 判断数组中节点的path的idx元素是否都相等
-function isEqualByIndex(idx: number, nodes: Array<VNode>) {
-  let val = nodes[0].path[idx];
-  for (let i = 1; i < nodes.length; i++) {
-    let node = nodes[i];
-    if (val !== node.path[idx]) {
-      return false;
-    }
-  }
-
-  return true;
-}
-
-// 尝试去渲染，已有任务就跳出
-export function tryRenderRoot(treeRoot: VNode) {
-  if (treeRoot.shouldUpdate && treeRoot.task === null) {
-    // 任务放进queue，但是调度开始还是异步的
-    treeRoot.task = pushRenderCallback(
-      renderFromRoot.bind(null, treeRoot),
-    );
-  }
-}
-
-// 总体任务入口
-function renderFromRoot(treeRoot) {
-  runAsyncEffects();
-
-  // 1. 构建vNode树
-  buildVNodeTree(treeRoot);
-
-  // 致命错误直接抛出
-  if (getBuildResult() === BuildFatalErrored) {
-    throw unrecoverableErrorDuringBuild;
-  }
-
-  // 2. 提交变更
-  submitToRender(treeRoot);
-
-  return null;
-}
-
 // 为重新进行深度遍历做准备
 function resetProcessingVariables(startUpdateVNode: VNode) {
   // 创建processing
@@ -195,81 +54,13 @@ function resetProcessingVariables(startUpdateVNode: VNode) {
   unrecoverableErrorDuringBuild = null;
 }
 
-// ============================== 深度遍历 ==============================
-function buildVNodeTree(treeRoot: VNode) {
-  const preMode = copyExecuteMode();
-  changeMode(InRender, true);
+// 收集有变化的节点，在submit阶段继续处理
+function collectDirtyNodes(vNode: VNode, parent: VNode): void {
+  // 将子树和此vNode的所有效果附加到父树的效果列表中，子项的完成顺序会影响副作用顺序。
+  parent.dirtyNodes.push(...vNode.dirtyNodes);
 
-  // 计算出开始节点
-  const startUpdateVNode = calcStartUpdateVNode(treeRoot);
-
-  // 缓存起来
-  setStartVNode(startUpdateVNode);
-
-  // 清空toUpdateNodes
-  treeRoot.toUpdateNodes.clear();
-
-  if (startUpdateVNode.tag !== TreeRoot) { // 不是根节点
-    // 设置namespace，用于createElement
-    const parentObj = findDomParent(startUpdateVNode);
-
-    // 当在componentWillUnmount中调用setState，parent可能是null，因为startUpdateVNode会被clear
-    if (parentObj !== null) {
-      const domParent = parentObj.parent;
-      resetNamespaceCtx(domParent);
-      setNamespaceCtx(domParent, domParent.outerDom);
-    }
-
-    // 恢复父节点的context
-    recoverParentsContextCtx(startUpdateVNode);
-  }
-
-  // 重置环境变量
-  resetProcessingVariables(startUpdateVNode);
-
-  do {
-    try {
-      while (processing !== null) {
-        // 捕获创建 vNodes
-        const next = captureVNode(processing);
-
-        if (next === null) {
-          // 如果没有产生新的，那么就完成当前节点，向上遍历
-          bubbleVNode(processing);
-        } else {
-          processing = next;
-        }
-
-        ProcessingVNode.val = null;
-      }
-      break;
-    } catch (thrownValue) {
-      handleError(treeRoot, thrownValue);
-    }
-  } while (true);
-
-  setExecuteMode(preMode);
-}
-
-function handleError(root, error): void {
-  if (processing === null || processing.parent === null) {
-    // 这是一个致命的错误，因为没有祖先可以处理它
-    setBuildResult(BuildFatalErrored);
-    unrecoverableErrorDuringBuild = error;
-
-    processing = null;
-    return;
-  }
-
-  // 处理capture和bubble阶段抛出的错误
-  handleRenderThrowError(processing, error);
-
-  bubbleVNode(processing);
-}
-
-export function setBuildResultError() {
-  if (getBuildResult() !== BuildCompleted) {
-    setBuildResult(BuildErrored);
+  if (FlagUtils.hasAnyFlag(vNode)) {
+    parent.dirtyNodes.push(vNode);
   }
 }
 
@@ -322,13 +113,207 @@ function bubbleVNode(vNode: VNode): void {
   }
 }
 
-// 收集有变化的节点，在submit阶段继续处理
-function collectDirtyNodes(vNode: VNode, parent: VNode): void {
-  // 将子树和此vNode的所有效果附加到父树的效果列表中，子项的完成顺序会影响副作用顺序。
-  parent.dirtyNodes.push(...vNode.dirtyNodes);
+function handleError(root, error): void {
+  if (processing === null || processing.parent === null) {
+    // 这是一个致命的错误，因为没有祖先可以处理它
+    setBuildResult(BuildFatalErrored);
+    unrecoverableErrorDuringBuild = error;
 
-  if (FlagUtils.hasAnyFlag(vNode)) {
-    parent.dirtyNodes.push(vNode);
+    processing = null;
+    return;
+  }
+
+  // 处理capture和bubble阶段抛出的错误
+  handleRenderThrowError(processing, error);
+
+  bubbleVNode(processing);
+}
+
+// 从多个更新节点中，计算出开始节点。即：找到最近的共同的父辈节点
+export function calcStartUpdateVNode(treeRoot: VNode) {
+  const toUpdateNodes = Array.from(treeRoot.toUpdateNodes);
+
+  if (toUpdateNodes.length === 0) {
+    return treeRoot;
+  }
+
+  if (toUpdateNodes.length === 1) {
+    return toUpdateNodes[0];
+  }
+
+  // 要计算的节点过多，直接返回根节点
+  if (toUpdateNodes.length > 100) {
+    return treeRoot;
+  }
+
+  // 找到路径最短的长度
+  let minPath = toUpdateNodes[0].path.length;
+  for (let i = 1; i < toUpdateNodes.length; i++) {
+    let pathLen = toUpdateNodes[i].path.length;
+    if (pathLen < minPath) {
+      minPath = pathLen;
+    }
+  }
+
+  // 找出开始不相等的idx
+  let idx = 0;
+  for (; idx < minPath; idx++) {
+    if (!isEqualByIndex(idx, toUpdateNodes)) {
+      break;
+    }
+  }
+  // 得到相等的路径
+  let startNodePath = toUpdateNodes[0].path.slice(0, idx);
+
+  let node = treeRoot;
+  for (let i = 1; i < startNodePath.length; i++) {
+    let pathIndex = startNodePath[i];
+    node = getChildByIndex(node, pathIndex);
+  }
+
+  return node;
+}
+
+// ============================== 深度遍历 ==============================
+function buildVNodeTree(treeRoot: VNode) {
+  const preMode = copyExecuteMode();
+  changeMode(InRender, true);
+
+  // 计算出开始节点
+  const startUpdateVNode = calcStartUpdateVNode(treeRoot);
+  // 缓存起来
+  setStartVNode(startUpdateVNode);
+
+  // 清空toUpdateNodes
+  treeRoot.toUpdateNodes.clear();
+
+  if (startUpdateVNode.tag !== TreeRoot) { // 不是根节点
+    // 设置namespace，用于createElement
+    const parentObj = findDomParent(startUpdateVNode);
+
+    // 当在componentWillUnmount中调用setState，parent可能是null，因为startUpdateVNode会被clear
+    if (parentObj !== null) {
+      const domParent = parentObj.parent;
+      resetNamespaceCtx(domParent);
+      setNamespaceCtx(domParent, domParent.outerDom);
+    }
+
+    // 恢复父节点的context
+    recoverParentsContextCtx(startUpdateVNode);
+  }
+
+  // 重置环境变量，为重新进行深度遍历做准备
+  resetProcessingVariables(startUpdateVNode);
+
+  do {
+    try {
+      while (processing !== null) {
+        // 捕获创建 vNodes
+        const next = captureVNode(processing);
+
+        if (next === null) {
+          // 如果没有产生新的，那么就完成当前节点，向上遍历
+          bubbleVNode(processing);
+        } else {
+          processing = next;
+        }
+      }
+
+      setProcessingClassVNode(null);
+
+      break;
+    } catch (thrownValue) {
+      handleError(treeRoot, thrownValue);
+    }
+  } while (true);
+
+  setExecuteMode(preMode);
+}
+
+// 总体任务入口
+function renderFromRoot(treeRoot) {
+  runAsyncEffects();
+
+  // 1. 构建vNode树
+  buildVNodeTree(treeRoot);
+
+  // 致命错误直接抛出
+  if (getBuildResult() === BuildFatalErrored) {
+    throw unrecoverableErrorDuringBuild;
+  }
+
+  // 2. 提交变更
+  submitToRender(treeRoot);
+
+  return null;
+}
+
+// 尝试去渲染，已有任务就跳出
+export function tryRenderRoot(treeRoot: VNode) {
+  if (treeRoot.shouldUpdate && treeRoot.task === null) {
+    // 任务放进queue，但是调度开始还是异步的
+    treeRoot.task = pushRenderCallback(
+      renderFromRoot.bind(null, treeRoot),
+    );
+  }
+}
+
+// 发起更新
+export function launchUpdateFromVNode(vNode: VNode) {
+  // 检查循环调用
+  checkLoopingUpdateLimit();
+
+  // 从当前vNode向上遍历到根节点，修改vNode.shouldUpdate和parent.childShouldUpdate
+  const treeRoot = updateShouldUpdateOfTree(vNode);
+  if (treeRoot === null) {
+    // 可能场景是：the componentWillUnmount method 或 useEffect cleanup function 方法中写异步任务，并且修改state。
+    // 因为异步回调的时候root都可能被清除了。
+    return;
+  }
+
+  // 保存待刷新的节点
+  treeRoot.toUpdateNodes.add(vNode);
+
+  if (checkMode(BySync) && // 非批量
+    !checkMode(InRender)) { // 不是渲染阶段触发
+
+    // 业务直接调用Horizon.render的时候会进入这个分支，同步渲染。
+    // 不能改成下面的异步，否则会有时序问题，因为业务可能会依赖这个渲染的完成。
+    renderFromRoot(treeRoot);
+  } else {
+    tryRenderRoot(treeRoot);
+
+    if (!isExecuting()) {
+      // 同步执行
+      callRenderQueueImmediate();
+    }
+  }
+}
+
+// 判断数组中节点的path的idx元素是否都相等
+function isEqualByIndex(idx: number, nodes: Array<VNode>) {
+  let val = nodes[0].path[idx];
+  for (let i = 1; i < nodes.length; i++) {
+    let node = nodes[i];
+    if (val !== node.path[idx]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function getChildByIndex(vNode: VNode, idx: number) {
+  let node = vNode.child;
+  for (let i = 0; i < idx; i++) {
+    node = node.next;
+  }
+  return node;
+}
+
+export function setBuildResultError() {
+  if (getBuildResult() !== BuildCompleted) {
+    setBuildResult(BuildErrored);
   }
 }
 
diff --git a/libs/horizon/src/renderer/Types.ts b/libs/horizon/src/renderer/Types.ts
index b1732fd1..6765fe10 100644
--- a/libs/horizon/src/renderer/Types.ts
+++ b/libs/horizon/src/renderer/Types.ts
@@ -2,28 +2,27 @@ export { VNode } from './vnode/VNode';
 
 type Trigger<A> = (A) => void;
 
-export type ReadContextHookType = { readContext<T>(context: ContextType<T>): T };
 export type UseStateHookType = {
   useState<S>(
     initialState: (() => S) | S
-  ): [S, Trigger<((S) => S) | S>]
+  ): [S, Trigger<((S) => S) | S>];
 };
 export type UseReducerHookType = {
   useReducer<S, P, A>(
     reducer: (S, A) => S,
     initArg: P, init?: (P) => S,
-  ): [S, Trigger<A>]
+  ): [S, Trigger<A>];
 };
 export type UseContextHookType = { useContext<T>(context: ContextType<T>,): T };
 
-export type HorizonElement = {
-  vtype: any,
-  type: any,
-  key: any,
-  ref: any,
-  props: any,
-
-  _vNode: any,
+export type JSXElement = {
+  vtype: any;
+  type: any;
+  key: any;
+  ref: any;
+  props: any;
+  
+  belongClassVNode: any;
 };
 
 export type ProviderType<T> = {
diff --git a/libs/horizon/src/renderer/UpdateHandler.ts b/libs/horizon/src/renderer/UpdateHandler.ts
index 5e54e365..d00f3ce9 100644
--- a/libs/horizon/src/renderer/UpdateHandler.ts
+++ b/libs/horizon/src/renderer/UpdateHandler.ts
@@ -1,10 +1,10 @@
-import type {VNode} from './Types';
-import {FlagUtils, ShouldCapture} from './vnode/VNodeFlags';
+import type { VNode } from './Types';
+import { FlagUtils, ShouldCapture } from './vnode/VNodeFlags';
 
 export type Update = {
-  type: 'Update' | 'Override' | 'ForceUpdate' | 'Error',
-  content: any,
-  callback: Callback | null,
+  type: 'Update' | 'Override' | 'ForceUpdate' | 'Error';
+  content: any;
+  callback: Callback | null;
 };
 
 export type Callback = () => any;
@@ -35,11 +35,8 @@ export function newUpdate(): Update {
 // 将update对象加入updates
 export function pushUpdate(vNode: VNode, update: Update) {
   const updates = vNode.updates;
-  if (updates === null) {
-    return;
-  }
 
-  updates.push(update);
+  updates?.push(update);
 }
 
 // 根据update获取新的state
@@ -50,24 +47,25 @@ function calcState(
   oldState: any,
   props: any,
 ): any {
-  if (update.type === UpdateState.Override) {
-    const content = update.content;
-    return typeof content === 'function' ? content.call(inst, oldState, props) : content;
-  } else if (update.type === UpdateState.ForceUpdate) {
-    vNode.isForceUpdate = true;
-    return oldState;
-  } else if (update.type === UpdateState.Error || update.type === UpdateState.Update) {
-    if (update.type === UpdateState.Error) {
+  switch (update.type) {
+    case UpdateState.Override:
+      const content = update.content;
+      return typeof content === 'function' ? content.call(inst, oldState, props) : content;
+    case UpdateState.ForceUpdate:
+      vNode.isForceUpdate = true;
+      return oldState;
+    case UpdateState.Error:
       FlagUtils.removeFlag(vNode, ShouldCapture);
       FlagUtils.markDidCapture(vNode);
-    }
-    const content = update.content;
-    const newState = typeof content === 'function' ? content.call(inst, oldState, props) : content;
-    return (newState === null || newState === undefined)
-      ? oldState
-      : {...oldState, ...newState}
+    case UpdateState.Update:
+      const updateContent = update.content;
+      const newState = typeof updateContent === 'function' ? updateContent.call(inst, oldState, props) : updateContent;
+      return (newState === null || newState === undefined)
+        ? oldState
+        : { ...oldState, ...newState };
+    default:
+      return oldState;
   }
-  return oldState;
 }
 
 // 收集callback
diff --git a/libs/horizon/src/renderer/components/CreatePortal.ts b/libs/horizon/src/renderer/components/CreatePortal.ts
index 3bdb4b17..38d30ca8 100644
--- a/libs/horizon/src/renderer/components/CreatePortal.ts
+++ b/libs/horizon/src/renderer/components/CreatePortal.ts
@@ -1,14 +1,14 @@
-import {TYPE_PORTAL} from '../utils/elementType';
+import {TYPE_PORTAL} from '../../external/JSXElementType';
 import type {PortalType} from '../Types';
 
 export function createPortal(
   children: any,
   outerDom: any,
-  key: string = null,
+  key: string = '',
 ): PortalType {
   return {
     vtype: TYPE_PORTAL,
-    key: key == null ? null : '' + key,
+    key: key == '' ? '' : '' + key,
     children,
     outerDom,
   };
diff --git a/libs/horizon/src/renderer/components/ForwardRef.ts b/libs/horizon/src/renderer/components/ForwardRef.ts
index 5baef940..63b2c791 100644
--- a/libs/horizon/src/renderer/components/ForwardRef.ts
+++ b/libs/horizon/src/renderer/components/ForwardRef.ts
@@ -1,4 +1,4 @@
-import {TYPE_FORWARD_REF} from '../utils/elementType';
+import {TYPE_FORWARD_REF} from '../../external/JSXElementType';
 
 export function forwardRef(render: Function) {
   return {
diff --git a/libs/horizon/src/renderer/components/Lazy.ts b/libs/horizon/src/renderer/components/Lazy.ts
index 4b37091e..ecdec465 100644
--- a/libs/horizon/src/renderer/components/Lazy.ts
+++ b/libs/horizon/src/renderer/components/Lazy.ts
@@ -1,6 +1,6 @@
 import type {PromiseType} from '../Types';
 
-import {TYPE_LAZY} from '../utils/elementType';
+import {TYPE_LAZY} from '../../external/JSXElementType';
 
 enum LayStatus {
   UnProcessed = 'UnProcessed',
@@ -10,14 +10,14 @@ enum LayStatus {
 }
 
 type LazyContent<T> = {
-  _status: string,
-  _value: () => PromiseType<{default: T}> | PromiseType<T> | T | any
+  _status: string;
+  _value: () => PromiseType<{default: T}> | PromiseType<T> | T | any;
 };
 
 export type LazyComponent<T, P> = {
-  vtype: number,
-  _content: P,
-  _load: (content: P) => T,
+  vtype: number;
+  _content: P;
+  _load: (content: P) => T;
 };
 
 // lazyContent随着阶段改变，_value改变:
diff --git a/libs/horizon/src/renderer/components/Memo.ts b/libs/horizon/src/renderer/components/Memo.ts
index 90d3c140..9d84e8c1 100644
--- a/libs/horizon/src/renderer/components/Memo.ts
+++ b/libs/horizon/src/renderer/components/Memo.ts
@@ -1,4 +1,4 @@
-import {TYPE_MEMO} from '../utils/elementType';
+import {TYPE_MEMO} from '../../external/JSXElementType';
 
 export function memo<Props>(type, compare?: (oldProps: Props, newProps: Props) => boolean) {
   return {
diff --git a/libs/horizon/src/renderer/components/context/CompatibleContext.ts b/libs/horizon/src/renderer/components/context/CompatibleContext.ts
index 0df1f5a2..0d6a4bd8 100644
--- a/libs/horizon/src/renderer/components/context/CompatibleContext.ts
+++ b/libs/horizon/src/renderer/components/context/CompatibleContext.ts
@@ -51,7 +51,7 @@ export function getOldContext(processing: VNode, clazz: Function, ifProvider: bo
 
   // 当组件既是提供者，也是消费者时，取上一个context，不能直接取最新context，因为已经被更新为当前组件的context；
   // 当组件只是消费者时，则取最新context
-  const parentContext = ((ifProvider && isOldProvider(clazz))) ?
+  const parentContext = (ifProvider && isOldProvider(clazz)) ?
     getOldPreviousContextCtx() :
     getOldContextCtx();
 
diff --git a/libs/horizon/src/renderer/components/context/CreateContext.ts b/libs/horizon/src/renderer/components/context/CreateContext.ts
index 45d97039..cbd6f96f 100644
--- a/libs/horizon/src/renderer/components/context/CreateContext.ts
+++ b/libs/horizon/src/renderer/components/context/CreateContext.ts
@@ -1,5 +1,5 @@
 import type {ContextType} from '../../Types';
-import {TYPE_PROVIDER, TYPE_CONTEXT} from '../../utils/elementType';
+import {TYPE_PROVIDER, TYPE_CONTEXT} from '../../../external/JSXElementType';
 
 export function createContext<T>(val: T): ContextType<T> {
   const context: ContextType<T> = {
diff --git a/libs/horizon/src/renderer/diff/DiffTools.ts b/libs/horizon/src/renderer/diff/DiffTools.ts
index 928f889b..0b14f611 100644
--- a/libs/horizon/src/renderer/diff/DiffTools.ts
+++ b/libs/horizon/src/renderer/diff/DiffTools.ts
@@ -1,27 +1,11 @@
-import type { VNode, HorizonElement } from '../Types';
+import type { VNode, JSXElement } from '../Types';
 
 // 当前vNode和element是同样的类型
 // LazyComponent 会修改type的类型，所以特殊处理这种类型
-export const isSameType = (vNode: VNode, ele: HorizonElement) => {
+export const isSameType = (vNode: VNode, ele: JSXElement) => {
   return vNode.type === ele.type || (vNode.isLazyComponent && vNode.lazyType === ele.type);
 };
 
-export function createRef(element: HorizonElement) {
-  const elementRef = element.ref;
-  // 如果ref是null、function、object，直接返回
-  if (elementRef === null || typeof elementRef === 'function' || typeof elementRef === 'object') {
-    return elementRef;
-  } else { // 包装成函数
-    if (element._vNode) {
-      let inst = element._vNode.realNode;
-
-      return function(instance) {
-        inst.refs[String(elementRef)] = instance;
-      };
-    }
-  }
-}
-
 export function isTextType(newChild: any) {
   return typeof newChild === 'string' || typeof newChild === 'number';
 }
diff --git a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
index 1adf32c8..cf2a7993 100644
--- a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
+++ b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
@@ -1,11 +1,10 @@
 import type { VNode } from '../Types';
 import { FlagUtils } from '../vnode/VNodeFlags';
-import { TYPE_ELEMENT, TYPE_FRAGMENT, TYPE_PORTAL } from '../utils/elementType';
+import { TYPE_COMMON_ELEMENT, TYPE_FRAGMENT, TYPE_PORTAL } from '../../external/JSXElementType';
 import { DomText, DomPortal, Fragment } from '../vnode/VNodeTags';
 import {updateVNode, createVNode, createVNodeFromElement, updateVNodePath} from '../vnode/VNodeCreator';
 import {
   isSameType,
-  createRef,
   getIteratorFn,
   isTextType,
   isArrayType,
@@ -60,7 +59,7 @@ function checkCanReuseNode(oldNode: VNode | null, newChild: any): boolean {
     if (isArrayType(newChild) || isIteratorType(newChild)) {
       return oldKey === null;
     }
-    if (newChild.vtype === TYPE_ELEMENT || newChild.vtype === TYPE_PORTAL) {
+    if (newChild.vtype === TYPE_COMMON_ELEMENT || newChild.vtype === TYPE_PORTAL) {
       return oldKey === newChild.key;
     }
   }
@@ -79,7 +78,7 @@ function getNodeType(newChild: any): string {
     if (isArrayType(newChild) || isIteratorType(newChild)) {
       return DiffCategory.ARR_NODE;
     }
-    if (newChild.vtype === TYPE_ELEMENT || newChild.vtype === TYPE_PORTAL) {
+    if (newChild.vtype === TYPE_COMMON_ELEMENT || newChild.vtype === TYPE_PORTAL) {
       return DiffCategory.OBJECT_NODE;
     }
   }
@@ -129,7 +128,7 @@ function getNewNode(parentNode: VNode, newChild: any, oldNode: VNode | null) {
       break;
     }
     case DiffCategory.OBJECT_NODE: {
-      if (newChild.vtype === TYPE_ELEMENT) {
+      if (newChild.vtype === TYPE_COMMON_ELEMENT) {
         if (newChild.type === TYPE_FRAGMENT) {
           if (oldNode === null || oldNode.tag !== Fragment) {
             const key = oldNode !== null ? oldNode.key : newChild.key;
@@ -142,10 +141,12 @@ function getNewNode(parentNode: VNode, newChild: any, oldNode: VNode | null) {
 
         if (oldNode === null || !isSameType(oldNode, newChild)) {
           resultNode = createVNodeFromElement(newChild);
-          resultNode.ref = createRef(newChild);
+          resultNode.ref = newChild.ref;
+          resultNode.belongClassVNode = newChild.belongClassVNode;
         } else {
           resultNode = updateVNode(oldNode, newChild.props);
-          resultNode.ref = createRef(newChild);
+          resultNode.ref = newChild.ref;
+          resultNode.belongClassVNode = newChild.belongClassVNode;
         }
         break;
       } else if (newChild.vtype === TYPE_PORTAL) {
@@ -200,7 +201,7 @@ function getOldNodeFromMap(nodeMap: Map<string | number, VNode>, newIdx: number,
     if (isArrayType(newChild) || isIteratorType(newChild)) {
       return nodeMap.get(newIdx) || null;
     }
-    if (newChild.vtype === TYPE_ELEMENT || newChild.vtype === TYPE_PORTAL) {
+    if (newChild.vtype === TYPE_COMMON_ELEMENT || newChild.vtype === TYPE_PORTAL) {
       return nodeMap.get(newChild.key === null ? newIdx : newChild.key) || null;
     }
   }
@@ -354,9 +355,9 @@ function diffArrayNodes(
   // 把剩下的currentVNode转成Map
   const leftChildrenMap = transLeftChildrenToMap(oldNode, rightEndOldNode);
   // 通过贪心算法+二分法获取最长递增子序列
-  const eIndexes = []; // 记录 eIndex 值
-  const result = []; // 记录最长子序列在eIndexes中的 index 值
-  const preIndex = []; // 贪心算法在替换的过程中会使得数组不正确，通过记录preIndex找到正确值
+  const eIndexes: Array<number> = []; // 记录 eIndex 值
+  const result: Array<number> = []; // 记录最长子序列在eIndexes中的 index 值
+  const preIndex: Array<number> = []; // 贪心算法在替换的过程中会使得数组不正确，通过记录preIndex找到正确值
   const reuseNodes = []; // 记录复用的 VNode
   let i = 0;
   for (; leftIdx < rightIdx; leftIdx++) {
@@ -367,6 +368,7 @@ function diffArrayNodes(
         // 从Map删除，后面不会deleteVNode
         leftChildrenMap.delete(newNode.key || leftIdx);
       }
+
       if (oldNodeFromMap !== null) {
         let eIndex = newNode.eIndex;
         eIndexes.push(eIndex);
@@ -380,7 +382,7 @@ function diffArrayNodes(
           let middle;
           // 二分法找到需要替换的值
           while (start < end) {
-            middle = Math.floor((start + end) / 2)
+            middle = Math.floor((start + end) / 2);
             if (eIndexes[result[middle]] > eIndex) {
               end = middle;
             } else {
@@ -403,6 +405,7 @@ function diffArrayNodes(
       appendNode(newNode);
     }
   }
+
   if (isComparing) {
     // 向前回溯找到正确的结果
     let length = result.length;
@@ -411,9 +414,9 @@ function diffArrayNodes(
       result[length] = prev;
       prev = preIndex[result[length]];
     }
-    result.forEach(i => {
+    result.forEach(idx => {
       // 把需要复用的节点从 restNodes 中清理掉，因为不需要打 add 标记，直接复用 dom 节点
-      reuseNodes[i] = null;
+      reuseNodes[idx] = null;
     });
     reuseNodes.forEach(node => {
       if (node !== null) {
@@ -490,7 +493,7 @@ function diffStringNodeHandler(
   firstChildVNode: VNode,
   isComparing: boolean
 ) {
-  let newTextNode = null;
+  let newTextNode: VNode | null = null;
 
   // 第一个vNode是Text，则复用
   if (firstChildVNode !== null && firstChildVNode.tag === DomText) {
@@ -520,7 +523,7 @@ function diffObjectNodeHandler(
   firstChildVNode: VNode,
   isComparing: boolean
 ) {
-  let canReuseNode = null;
+  let canReuseNode: VNode | null = null;
 
   // 通过key比对是否有可以reuse
   const newKey = newChild.key;
@@ -535,9 +538,9 @@ function diffObjectNodeHandler(
     }
   }
 
-  let resultNode = null;
+  let resultNode: VNode | null = null;
   let startDelVNode = firstChildVNode;
-  if (newChild.vtype === TYPE_ELEMENT) {
+  if (newChild.vtype === TYPE_COMMON_ELEMENT) {
     if (canReuseNode) {
       // 可以复用
       if (canReuseNode.tag === Fragment && newChild.type === TYPE_FRAGMENT) {
@@ -546,7 +549,8 @@ function diffObjectNodeHandler(
         resultNode.next = null;
       } else if (isSameType(canReuseNode, newChild)) {
         resultNode = updateVNode(canReuseNode, newChild.props);
-        resultNode.ref = createRef(newChild);
+        resultNode.ref = newChild.ref;
+        resultNode.belongClassVNode = newChild.belongClassVNode;
         startDelVNode = getSiblingVNode(resultNode);
         resultNode.next = null;
       }
@@ -558,7 +562,8 @@ function diffObjectNodeHandler(
         resultNode = createVNode(Fragment, newChild.key, newChild.props.children);
       } else {
         resultNode = createVNodeFromElement(newChild);
-        resultNode.ref = createRef(newChild);
+        resultNode.ref = newChild.ref;
+        resultNode.belongClassVNode = newChild.belongClassVNode;
       }
     }
   } else if (newChild.vtype === TYPE_PORTAL) {
diff --git a/libs/horizon/src/renderer/hooks/HookStage.ts b/libs/horizon/src/renderer/hooks/HookStage.ts
index 65a96424..c3e9622a 100644
--- a/libs/horizon/src/renderer/hooks/HookStage.ts
+++ b/libs/horizon/src/renderer/hooks/HookStage.ts
@@ -4,7 +4,7 @@ export enum HookStage {
   Update = 2,
 }
 
-let hookStage: HookStage = null;
+let hookStage: HookStage | null = null;
 
 export function getHookStage() {
   return hookStage;
diff --git a/libs/horizon/src/renderer/hooks/UseEffectHook.ts b/libs/horizon/src/renderer/hooks/UseEffectHook.ts
index ccd4e7d4..d3418782 100644
--- a/libs/horizon/src/renderer/hooks/UseEffectHook.ts
+++ b/libs/horizon/src/renderer/hooks/UseEffectHook.ts
@@ -31,9 +31,9 @@ function useEffect(
   }
 
   if (stage === HookStage.Init) {
-    return useEffectForInit(effectFunc, deps, effectType);
+    useEffectForInit(effectFunc, deps, effectType);
   } else if (stage === HookStage.Update) {
-    return useEffectForUpdate(effectFunc, deps, effectType);
+    useEffectForUpdate(effectFunc, deps, effectType);
   }
 }
 
diff --git a/libs/horizon/src/renderer/render/BaseComponent.ts b/libs/horizon/src/renderer/render/BaseComponent.ts
index b045b215..8e5e56d4 100644
--- a/libs/horizon/src/renderer/render/BaseComponent.ts
+++ b/libs/horizon/src/renderer/render/BaseComponent.ts
@@ -15,6 +15,32 @@ import { createChildrenByDiff } from '../diff/nodeDiffComparator';
 import {onlyUpdateChildVNodes} from '../vnode/VNodeCreator';
 import componentRenders from './index';
 
+// 复用vNode时，也需对stack进行处理
+function handlerContext(processing: VNode) {
+  switch (processing.tag) {
+    case TreeRoot:
+      setNamespaceCtx(processing, processing.outerDom);
+      break;
+    case DomComponent:
+      setNamespaceCtx(processing);
+      break;
+    case ClassComponent: {
+      const isOldCxtExist = isOldProvider(processing.type);
+      cacheOldCtx(processing, isOldCxtExist);
+      break;
+    }
+    case DomPortal:
+      setNamespaceCtx(processing, processing.outerDom);
+      break;
+    case ContextProvider: {
+      const newValue = processing.props.value;
+      setContextCtx(processing, newValue);
+      break;
+    }
+    // No Default
+  }
+}
+
 export function captureVNode(processing: VNode): VNode | null {
   const component = componentRenders[processing.tag];
 
@@ -38,31 +64,6 @@ export function captureVNode(processing: VNode): VNode | null {
   return component.captureRender(processing, shouldUpdate);
 }
 
-// 复用vNode时，也需对stack进行处理
-function handlerContext(processing: VNode) {
-  switch (processing.tag) {
-    case TreeRoot:
-      setNamespaceCtx(processing, processing.outerDom);
-      break;
-    case DomComponent:
-      setNamespaceCtx(processing);
-      break;
-    case ClassComponent: {
-      const isOldCxtExist = isOldProvider(processing.type);
-      cacheOldCtx(processing, isOldCxtExist);
-      break;
-    }
-    case DomPortal:
-      setNamespaceCtx(processing, processing.outerDom);
-      break;
-    case ContextProvider: {
-      const newValue = processing.props.value;
-      setContextCtx(processing, newValue);
-      break;
-    }
-  }
-}
-
 // 创建孩子节点
 export function createVNodeChildren(processing: VNode, nextChildren: any) {
   const isComparing = !processing.isCreated;
diff --git a/libs/horizon/src/renderer/render/ClassComponent.ts b/libs/horizon/src/renderer/render/ClassComponent.ts
index 72ff9224..b459215c 100644
--- a/libs/horizon/src/renderer/render/ClassComponent.ts
+++ b/libs/horizon/src/renderer/render/ClassComponent.ts
@@ -20,33 +20,88 @@ import {
   markComponentDidUpdate,
   markGetSnapshotBeforeUpdate,
 } from './class/ClassLifeCycleProcessor';
-import {FlagUtils} from '../vnode/VNodeFlags';
+import { FlagUtils } from '../vnode/VNodeFlags';
 import { createVNodeChildren, markRef } from './BaseComponent';
 import {
   createUpdateArray,
   processUpdates,
 } from '../UpdateHandler';
 import { getContextChangeCtx, setContextChangeCtx } from '../ContextSaver';
-import ProcessingVNode from '../vnode/ProcessingVNode';
-import {onlyUpdateChildVNodes} from '../vnode/VNodeCreator';
+import { setProcessingClassVNode } from '../GlobalVar';
+import { onlyUpdateChildVNodes } from '../vnode/VNodeCreator';
 
-export function captureRender(processing: VNode): VNode | null {
-  const clazz = processing.type;
-  const props = processing.props;
-  const nextProps = processing.isLazyComponent ? mergeDefaultProps(clazz, props) : props;
-  return captureClassComponent(processing, clazz, nextProps);
+// 获取当前节点的context
+export function getCurrentContext(clazz, processing: VNode) {
+  const context = clazz.contextType;
+  return typeof context === 'object' && context !== null
+    ? getNewContext(processing, context)
+    : getOldContext(processing, clazz, true);
 }
 
-export function bubbleRender(processing: VNode) {
-  if (isOldProvider(processing.type)) {
-    resetOldCtx(processing);
+// 挂载实例
+function mountInstance(clazz, processing: VNode, nextProps: object) {
+  if (!processing.isCreated) {
+    processing.isCreated = true;
+    FlagUtils.markAddition(processing);
+  }
+
+  // 构造实例
+  callConstructor(processing, clazz, nextProps);
+
+  const inst = processing.realNode;
+  inst.props = nextProps;
+  inst.state = processing.state;
+  inst.context = getCurrentContext(clazz, processing);
+  inst.refs = {};
+
+  createUpdateArray(processing);
+  processUpdates(processing, inst, nextProps);
+  inst.state = processing.state;
+
+  // 在调用类组建的渲染方法之前调用 并且在初始挂载及后续更新时都会被调用
+  callDerivedStateFromProps(processing, clazz.getDerivedStateFromProps, nextProps);
+  callComponentWillMount(processing, inst, nextProps);
+
+  markComponentDidMount(processing);
+}
+
+// 构建子节点
+function createChildren(clazz: any, processing: VNode) {
+  markRef(processing);
+
+  setProcessingClassVNode(processing);
+  processing.state = processing.realNode.state;
+
+  const inst = processing.realNode;
+  const isCatchError = processing.flags.DidCapture;
+
+  // 按照已有规格，如果捕获了错误却没有定义getDerivedStateFromError函数，返回的child为null
+  const newElements = isCatchError && typeof clazz.getDerivedStateFromError !== 'function'
+    ? null
+    : inst.render();
+
+  processing.child = createVNodeChildren(processing, newElements);
+  return processing.child;
+}
+
+// 根据isUpdateComponent，执行不同的生命周期
+function callUpdateLifeCycle(processing: VNode, nextProps: object, clazz) {
+  const inst = processing.realNode;
+  const newContext = getCurrentContext(clazz, processing);
+  if (processing.isCreated) {
+    callComponentWillMount(processing, inst);
+  } else {
+    callComponentWillUpdate(inst, nextProps, processing.state, newContext);
   }
 }
 
-// 用于未完成的类组件
-export function getIncompleteClassComponent(clazz, processing: VNode, nextProps: object):VNode | null {
-  mountInstance(clazz, processing, nextProps);
-  return createChildren(clazz, processing);
+function markLifeCycle(processing: VNode, nextProps: object, shouldUpdate: Boolean) {
+  if (processing.isCreated) {
+    markComponentDidMount(processing);
+  } else if (processing.state !== processing.oldState || shouldUpdate) {
+    markComponentDidUpdate(processing);
+    markGetSnapshotBeforeUpdate(processing);
+  }
 }
 
 // 用于类组件
@@ -127,76 +182,21 @@ export function captureClassComponent(processing: VNode, clazz: any, nextProps:
   }
 }
 
-// 挂载实例
-function mountInstance(clazz, processing: VNode, nextProps: object) {
-  if (!processing.isCreated) {
-    processing.isCreated = true;
-    FlagUtils.markAddition(processing);
-  }
-
-  // 构造实例
-  callConstructor(processing, clazz, nextProps);
-
-  const inst = processing.realNode;
-  inst.props = nextProps;
-  inst.state = processing.state;
-  inst.context = getCurrentContext(clazz, processing);
-  inst.refs = {};
-
-  createUpdateArray(processing);
-  processUpdates(processing, inst, nextProps);
-  inst.state = processing.state;
-
-  // 在调用类组建的渲染方法之前调用 并且在初始挂载及后续更新时都会被调用
-  callDerivedStateFromProps(processing, clazz.getDerivedStateFromProps, nextProps);
-  callComponentWillMount(processing, inst, nextProps);
-
-  markComponentDidMount(processing);
+export function captureRender(processing: VNode): VNode | null {
+  const clazz = processing.type;
+  const props = processing.props;
+  const nextProps = processing.isLazyComponent ? mergeDefaultProps(clazz, props) : props;
+  return captureClassComponent(processing, clazz, nextProps);
 }
 
-// 构建子节点
-function createChildren(clazz: any, processing: VNode) {
-  markRef(processing);
-
-  ProcessingVNode.val = processing;
-  processing.state = processing.realNode.state;
-
-  const inst = processing.realNode;
-  const isCatchError = processing.flags.DidCapture;
-
-  // 按照已有规格，如果捕获了错误却没有定义getDerivedStateFromError函数，返回的child为null
-  const newElements = (isCatchError && typeof clazz.getDerivedStateFromError !== 'function')
-    ? null
-    : inst.render();
-
-  processing.child = createVNodeChildren(processing, newElements);
-  return processing.child;
-}
-
-// 获取当前节点的context
-export function getCurrentContext(clazz, processing: VNode) {
-  const context = clazz.contextType;
-  return typeof context === 'object' && context !== null
-    ? getNewContext(processing, context)
-    : getOldContext(processing, clazz, true);
-}
-
-// 根据isUpdateComponent，执行不同的生命周期
-function callUpdateLifeCycle(processing: VNode, nextProps: object, clazz) {
-  const inst = processing.realNode;
-  const newContext = getCurrentContext(clazz, processing);
-  if (processing.isCreated) {
-    callComponentWillMount(processing, inst);
-  } else {
-    callComponentWillUpdate(inst, nextProps, processing.state, newContext);
+export function bubbleRender(processing: VNode) {
+  if (isOldProvider(processing.type)) {
+    resetOldCtx(processing);
   }
 }
 
-function markLifeCycle(processing: VNode, nextProps: object, shouldUpdate: Boolean) {
-  if (processing.isCreated) {
-    markComponentDidMount(processing);
-  } else if (processing.state !== processing.oldState || shouldUpdate) {
-    markComponentDidUpdate(processing);
-    markGetSnapshotBeforeUpdate(processing);
-  }
+// 用于未完成的类组件
+export function getIncompleteClassComponent(clazz, processing: VNode, nextProps: object): VNode | null {
+  mountInstance(clazz, processing, nextProps);
+  return createChildren(clazz, processing);
 }
diff --git a/libs/horizon/src/renderer/render/ClsOrFunComponent.ts b/libs/horizon/src/renderer/render/ClsOrFunComponent.ts
index 4a2204a1..6eccd85b 100644
--- a/libs/horizon/src/renderer/render/ClsOrFunComponent.ts
+++ b/libs/horizon/src/renderer/render/ClsOrFunComponent.ts
@@ -7,14 +7,8 @@ import {FlagUtils} from '../vnode/VNodeFlags';
 import {exeFunctionHook} from '../hooks/HookMain';
 import {createVNodeChildren} from './BaseComponent';
 
-export function captureRender(processing: VNode): VNode | null {
-  return captureIndeterminateComponent(processing);
-}
-
-export function bubbleRender() {}
-
 function captureIndeterminateComponent(
-  processing: VNode | null,
+  processing: VNode,
 ): VNode | null {
   const funcComp = processing.type;
 
@@ -34,3 +28,9 @@ function captureIndeterminateComponent(
   processing.child = createVNodeChildren(processing, newElements);
   return processing.child;
 }
+
+export function captureRender(processing: VNode): VNode | null {
+  return captureIndeterminateComponent(processing);
+}
+
+export function bubbleRender() {}
diff --git a/libs/horizon/src/renderer/render/ContextConsumer.ts b/libs/horizon/src/renderer/render/ContextConsumer.ts
index 7fcbd59c..c45934db 100644
--- a/libs/horizon/src/renderer/render/ContextConsumer.ts
+++ b/libs/horizon/src/renderer/render/ContextConsumer.ts
@@ -3,12 +3,6 @@ import type {VNode, ContextType} from '../Types';
 import {resetDepContexts, getNewContext} from '../components/context/Context';
 import {createVNodeChildren} from './BaseComponent';
 
-export function captureRender(processing: VNode): VNode | null {
-  return captureContextConsumer(processing);
-}
-
-export function bubbleRender() {}
-
 function captureContextConsumer(processing: VNode) {
   const context: ContextType<any> = processing.type;
   const props = processing.props;
@@ -21,3 +15,10 @@ function captureContextConsumer(processing: VNode) {
   processing.child = createVNodeChildren(processing, newChildren);
   return processing.child;
 }
+
+export function captureRender(processing: VNode): VNode | null {
+  return captureContextConsumer(processing);
+}
+
+export function bubbleRender() {}
+
diff --git a/libs/horizon/src/renderer/render/ContextProvider.ts b/libs/horizon/src/renderer/render/ContextProvider.ts
index c0ef07e6..c31a9ff4 100644
--- a/libs/horizon/src/renderer/render/ContextProvider.ts
+++ b/libs/horizon/src/renderer/render/ContextProvider.ts
@@ -14,46 +14,6 @@ import {launchUpdateFromVNode} from '../TreeBuilder';
 import {onlyUpdateChildVNodes} from '../vnode/VNodeCreator';
 import {setParentsChildShouldUpdate} from '../vnode/VNodeShouldUpdate';
 
-export function captureRender(processing: VNode): VNode | null {
-  return captureContextProvider(processing);
-}
-
-export function bubbleRender(processing: VNode) {
-  resetContextCtx(processing);
-}
-
-function captureContextProvider(processing: VNode): VNode | null {
-  const providerType: ProviderType<any> = processing.type;
-  const contextType: ContextType<any> = providerType._context;
-
-  const newProps = processing.props;
-  const oldProps = !processing.isCreated ? processing.oldProps : null;
-
-  // 获取provider设置的context，即provider组件设置的value
-  const newCtx = newProps.value;
-
-  // 更新processing的context值为newProps.value
-  setContextCtx(processing, newCtx);
-
-  if (oldProps !== null) {
-    const oldCtx = oldProps.value;
-    const isSameContext = isSame(oldCtx, newCtx);
-    if (isSameContext) {
-      // context没有改变，复用
-      if (oldProps.children === newProps.children && !getContextChangeCtx()) {
-        return onlyUpdateChildVNodes(processing);
-      }
-    } else {
-      // context更改，更新所有依赖的组件
-      handleContextChange(processing, contextType);
-    }
-  }
-
-  const newElements = newProps.children;
-  processing.child = createVNodeChildren(processing, newElements);
-  return processing.child;
-}
-
 // 从依赖中找到匹配context的VNode
 function matchDependencies(depContexts, context, vNode): boolean {
   for (let i = 0; i < depContexts.length; i++) {
@@ -88,18 +48,59 @@ function handleContextChange(processing: VNode, context: ContextType<any>): void
   let isMatch = false;
 
   // 从vNode开始遍历
-  travelVNodeTree(vNode, (node) => {
+  travelVNodeTree(vNode, node => {
     const depContexts = node.depContexts;
     if (depContexts.length) {
       isMatch = matchDependencies(depContexts, context, node) ?? isMatch;
     }
-  }, (node) => {
+  }, node =>
     // 如果这是匹配的provider，则不要更深入地扫描
-    return node.tag === ContextProvider && node.type === processing.type;
-  }, processing);
+    node.tag === ContextProvider && node.type === processing.type
+  , processing);
 
   // 找到了依赖context的子节点，触发一次更新
   if (isMatch) {
     launchUpdateFromVNode(processing);
   }
 }
+
+function captureContextProvider(processing: VNode): VNode | null {
+  const providerType: ProviderType<any> = processing.type;
+  const contextType: ContextType<any> = providerType._context;
+
+  const newProps = processing.props;
+  const oldProps = !processing.isCreated ? processing.oldProps : null;
+
+  // 获取provider设置的context，即provider组件设置的value
+  const newCtx = newProps.value;
+
+  // 更新processing的context值为newProps.value
+  setContextCtx(processing, newCtx);
+
+  if (oldProps !== null) {
+    const oldCtx = oldProps.value;
+    const isSameContext = isSame(oldCtx, newCtx);
+    if (isSameContext) {
+      // context没有改变，复用
+      if (oldProps.children === newProps.children && !getContextChangeCtx()) {
+        return onlyUpdateChildVNodes(processing);
+      }
+    } else {
+      // context更改，更新所有依赖的组件
+      handleContextChange(processing, contextType);
+    }
+  }
+
+  const newElements = newProps.children;
+  processing.child = createVNodeChildren(processing, newElements);
+  return processing.child;
+}
+
+export function captureRender(processing: VNode): VNode | null {
+  return captureContextProvider(processing);
+}
+
+export function bubbleRender(processing: VNode) {
+  resetContextCtx(processing);
+}
+
diff --git a/libs/horizon/src/renderer/render/DomComponent.ts b/libs/horizon/src/renderer/render/DomComponent.ts
index 88122643..bac845b1 100644
--- a/libs/horizon/src/renderer/render/DomComponent.ts
+++ b/libs/horizon/src/renderer/render/DomComponent.ts
@@ -17,8 +17,55 @@ import {createVNodeChildren, markRef} from './BaseComponent';
 import {DomComponent, DomPortal, DomText} from '../vnode/VNodeTags';
 import {getFirstChild, travelVNodeTree} from '../vnode/VNodeUtils';
 
-export function captureRender(processing: VNode): VNode | null {
-  return captureDomComponent(processing);
+function updateDom(
+  processing: VNode,
+  type: any,
+  newProps: Props,
+) {
+  // 如果oldProps !== newProps，意味着存在更新，并且需要处理其相关的副作用
+  const oldProps = processing.oldProps;
+  if (oldProps === newProps) {
+    // 如果props没有发生变化，即使它的children发生了变化，我们也不会改变它
+    return;
+  }
+
+  const dom: Element = processing.realNode;
+
+  const changeList = getPropChangeList(
+    dom,
+    type,
+    oldProps,
+    newProps,
+  );
+  processing.changeList = changeList;
+
+  // 输入类型的直接标记更新
+  if (type === 'input' || type === 'textarea' || type === 'select' || type === 'option') {
+    FlagUtils.markUpdate(processing);
+  } else {
+    // 其它的类型，数据有变化才标记更新
+    if (changeList.length) {
+      FlagUtils.markUpdate(processing);
+    }
+  }
+}
+
+// 把dom类型的子节点append到parent dom中
+function appendAllChildren(parent: Element, processing: VNode) {
+  const vNode = processing.child;
+  if (vNode === null) {
+    return;
+  }
+
+  // 向下递归它的子节点，查找所有终端节点。
+  travelVNodeTree(vNode, node => {
+    if (node.tag === DomComponent || node.tag === DomText) {
+      appendChildElement(parent, node.realNode);
+    }
+  }, node =>
+    // 已经append到父节点，或者是DomPortal都不需要处理child了
+    node.tag === DomComponent || node.tag === DomText || node.tag === DomPortal
+  , processing);
 }
 
 export function bubbleRender(processing: VNode) {
@@ -86,53 +133,6 @@ function captureDomComponent(processing: VNode): VNode | null {
   return processing.child;
 }
 
-// 把dom类型的子节点append到parent dom中
-function appendAllChildren(parent: Element, processing: VNode) {
-  const vNode = processing.child;
-  if (vNode === null) {
-    return;
-  }
-
-  // 向下递归它的子节点，查找所有终端节点。
-  travelVNodeTree(vNode, (node) => {
-    if (node.tag === DomComponent || node.tag === DomText) {
-      appendChildElement(parent, node.realNode);
-    }
-  }, (node) => {
-    // 已经append到父节点，或者是DomPortal都不需要处理child了
-    return node.tag === DomComponent || node.tag === DomText || node.tag === DomPortal;
-  }, processing);
-}
-
-function updateDom(
-  processing: VNode,
-  type: any,
-  newProps: Props,
-) {
-  // 如果oldProps !== newProps，意味着存在更新，并且需要处理其相关的副作用
-  const oldProps = processing.oldProps;
-  if (oldProps === newProps) {
-    // 如果props没有发生变化，即使它的children发生了变化，我们也不会改变它
-    return;
-  }
-
-  const dom: Element = processing.realNode;
-
-  const changeList = getPropChangeList(
-    dom,
-    type,
-    oldProps,
-    newProps,
-  );
-  processing.changeList = changeList;
-
-  // 输入类型的直接标记更新
-  if (type === 'input' || type === 'textarea' || type === 'select' || type === 'option') {
-    FlagUtils.markUpdate(processing);
-  } else {
-    // 其它的类型，数据有变化才标记更新
-    if (changeList.length) {
-      FlagUtils.markUpdate(processing);
-    }
-  }
+export function captureRender(processing: VNode): VNode | null {
+  return captureDomComponent(processing);
 }
diff --git a/libs/horizon/src/renderer/render/DomPortal.ts b/libs/horizon/src/renderer/render/DomPortal.ts
index 90f0545c..e8da4a6e 100644
--- a/libs/horizon/src/renderer/render/DomPortal.ts
+++ b/libs/horizon/src/renderer/render/DomPortal.ts
@@ -4,10 +4,6 @@ import { createChildrenByDiff } from '../diff/nodeDiffComparator';
 import { createVNodeChildren } from './BaseComponent';
 import { prePortal } from '../../dom/DOMOperator';
 
-export function captureRender(processing: VNode): VNode | null {
-  return capturePortalComponent(processing);
-}
-
 export function bubbleRender(processing: VNode) {
   resetNamespaceCtx(processing);
 
@@ -27,3 +23,7 @@ function capturePortalComponent(processing: VNode) {
   }
   return processing.child;
 }
+
+export function captureRender(processing: VNode): VNode | null {
+  return capturePortalComponent(processing);
+}
diff --git a/libs/horizon/src/renderer/render/FunctionComponent.ts b/libs/horizon/src/renderer/render/FunctionComponent.ts
index 4956d57b..ea975abd 100644
--- a/libs/horizon/src/renderer/render/FunctionComponent.ts
+++ b/libs/horizon/src/renderer/render/FunctionComponent.ts
@@ -13,23 +13,40 @@ import {onlyUpdateChildVNodes} from '../vnode/VNodeCreator';
 // 在useState, useReducer的时候，会触发state变化
 let stateChange = false;
 
-export function captureRender(processing: VNode, shouldUpdate?: boolean): VNode | null {
-  const Component = processing.type;
-  const unresolvedProps = processing.props;
-  const resolvedProps =
-    processing.isLazyComponent
-      ? mergeDefaultProps(Component, unresolvedProps)
-      : unresolvedProps;
+export function bubbleRender() {}
 
-  return captureFunctionComponent(
-    processing,
-    Component,
-    resolvedProps,
-    shouldUpdate
-  );
+// 判断children是否可以复用
+function checkIfCanReuseChildren(processing: VNode, shouldUpdate?: boolean) {
+  let isCanReuse = true;
+
+  if (!processing.isCreated) {
+    const oldProps = processing.oldProps;
+    const newProps = processing.props;
+
+    // 如果props或者context改变了
+    if (oldProps !== newProps || getContextChangeCtx() || processing.isDepContextChange) {
+      isCanReuse = false;
+    } else {
+      if (shouldUpdate && processing.suspenseChildThrow) {
+        // 使用完后恢复
+        processing.suspenseChildThrow = false;
+        isCanReuse = false;
+      }
+    }
+  } else {
+    isCanReuse = false;
+  }
+
+  return isCanReuse;
 }
 
-export function bubbleRender() {}
+export function setStateChange(isUpdate) {
+  stateChange = isUpdate;
+}
+
+export function isStateChange() {
+  return stateChange;
+}
 
 export function captureFunctionComponent(
   processing: VNode,
@@ -66,35 +83,19 @@ export function captureFunctionComponent(
   return processing.child;
 }
 
-// 判断children是否可以复用
-function checkIfCanReuseChildren(processing: VNode, shouldUpdate?: boolean) {
-  let isCanReuse = true;
+export function captureRender(processing: VNode, shouldUpdate?: boolean): VNode | null {
+  const Component = processing.type;
+  const unresolvedProps = processing.props;
+  const resolvedProps =
+    processing.isLazyComponent
+      ? mergeDefaultProps(Component, unresolvedProps)
+      : unresolvedProps;
 
-  if (!processing.isCreated) {
-    const oldProps = processing.oldProps;
-    const newProps = processing.props;
-
-    // 如果props或者context改变了
-    if (oldProps !== newProps || getContextChangeCtx() || processing.isDepContextChange) {
-      isCanReuse = false;
-    } else {
-      if (shouldUpdate && processing.suspenseChildThrow) {
-        // 使用完后恢复
-        processing.suspenseChildThrow = false;
-        isCanReuse = false;
-      }
-    }
-  } else {
-    isCanReuse = false;
-  }
-
-  return isCanReuse;
+  return captureFunctionComponent(
+    processing,
+    Component,
+    resolvedProps,
+    shouldUpdate
+  );
 }
 
-export function setStateChange(isUpdate) {
-  stateChange = isUpdate;
-}
-
-export function isStateChange() {
-  return stateChange;
-}
diff --git a/libs/horizon/src/renderer/render/LazyComponent.ts b/libs/horizon/src/renderer/render/LazyComponent.ts
index 65f7285c..f3dcc954 100644
--- a/libs/horizon/src/renderer/render/LazyComponent.ts
+++ b/libs/horizon/src/renderer/render/LazyComponent.ts
@@ -1,23 +1,23 @@
-import type {VNode} from '../Types';
+import type { VNode } from '../Types';
 
-import {FlagUtils} from '../vnode/VNodeFlags';
-import {getLazyVNodeTag} from '../vnode/VNodeCreator';
+import { FlagUtils } from '../vnode/VNodeFlags';
+import { getLazyVNodeTag } from '../vnode/VNodeCreator';
 import {
   ClassComponent,
   ForwardRef,
   FunctionComponent,
   MemoComponent,
 } from '../vnode/VNodeTags';
-import {throwIfTrue} from '../utils/throwIfTrue';
-import {captureFunctionComponent} from './FunctionComponent';
-import {captureClassComponent} from './ClassComponent';
-import {captureMemoComponent} from './MemoComponent';
+import { throwIfTrue } from '../utils/throwIfTrue';
+import { captureFunctionComponent } from './FunctionComponent';
+import { captureClassComponent } from './ClassComponent';
+import { captureMemoComponent } from './MemoComponent';
 
 export function captureRender(processing: VNode, shouldUpdate: boolean): VNode | null {
   return captureLazyComponent(processing, processing.type, shouldUpdate);
 }
 
-export function bubbleRender() {}
+export function bubbleRender() { }
 
 const LazyRendererMap = {
   [FunctionComponent]: captureFunctionComponent,
@@ -64,12 +64,13 @@ function captureLazyComponent(
       Component,
       '',
     );
+    return null;
   }
 }
 
 export function mergeDefaultProps(Component: any, props: object): object {
   if (Component && Component.defaultProps) {
-    const clonedProps = {...props};
+    const clonedProps = { ...props };
     const defaultProps = Component.defaultProps;
     Object.keys(defaultProps).forEach(key => {
       if (clonedProps[key] === undefined) {
diff --git a/libs/horizon/src/renderer/render/MemoComponent.ts b/libs/horizon/src/renderer/render/MemoComponent.ts
index 2c24c0d7..fd273249 100644
--- a/libs/horizon/src/renderer/render/MemoComponent.ts
+++ b/libs/horizon/src/renderer/render/MemoComponent.ts
@@ -7,7 +7,7 @@ import {
   TYPE_FRAGMENT,
   TYPE_PROFILER,
   TYPE_STRICT_MODE,
-} from '../utils/elementType';
+} from '../../external/JSXElementType';
 import {Fragment} from '../vnode/VNodeTags';
 
 export function captureRender(processing: VNode, shouldUpdate: boolean): VNode | null {
diff --git a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
index b23beb93..46260ac0 100644
--- a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
+++ b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
@@ -70,8 +70,9 @@ function callBeforeSubmitLifeCycles(
     case TreeRoot: {
       const root = vNode.realNode;
       clearContainer(root.outerDom);
-      return;
     }
+    
+    // No Default
   }
 }
 
@@ -136,8 +137,9 @@ function callAfterSubmitLifeCycles(
           vNode.realNode.focus();
         }
       }
-      return;
     }
+
+    // No Default
   }
 }
 
@@ -157,13 +159,19 @@ function hideOrUnhideAllChildren(vNode, isHidden) {
 
 function attachRef(vNode: VNode) {
   const ref = vNode.ref;
+
   if (ref !== null) {
     const instance = vNode.realNode;
 
-    if (typeof ref === 'function') {
+    let refType = typeof ref;
+    if (refType === 'function') {
       ref(instance);
-    } else {
+    } else if (refType === 'object') {
       (<RefType>ref).current = instance;
+    } else {
+      if (vNode.belongClassVNode && vNode.belongClassVNode.realNode) {
+        vNode.belongClassVNode.realNode.refs[String(ref)] = instance;
+      }
     }
   }
 }
@@ -172,25 +180,26 @@ function detachRef(vNode: VNode, isOldRef?: boolean) {
   let ref = (isOldRef ? vNode.oldRef : vNode.ref);
 
   if (ref !== null) {
-    if (typeof ref === 'function') {
+    let refType = typeof ref;
+
+    if (refType === 'function') {
       try {
         ref(null);
       } catch (error) {
         handleSubmitError(vNode, error);
       }
-    } else {
+    } else if (refType === 'object') {
       (<RefType>ref).current = null;
+    } else {
+      if (vNode.belongClassVNode && vNode.belongClassVNode.realNode) {
+        vNode.belongClassVNode.realNode.refs[String(ref)] = null;
+      }
     }
   }
 }
 
 // 卸载一个vNode，不会递归
 function unmountVNode(vNode: VNode): void {
-  // TODO 暂时用于规避error处理逻辑，后续删除
-  if (vNode.flags.Addition) {
-    return;
-  }
-
   switch (vNode.tag) {
     case FunctionComponent:
     case ForwardRef:
diff --git a/libs/horizon/src/renderer/submit/Submit.ts b/libs/horizon/src/renderer/submit/Submit.ts
index 95ada780..774c7386 100644
--- a/libs/horizon/src/renderer/submit/Submit.ts
+++ b/libs/horizon/src/renderer/submit/Submit.ts
@@ -11,7 +11,7 @@ import {
   callBeforeSubmitLifeCycles, submitDeletion, submitAddition,
   submitResetTextContent, submitUpdate, detachRef,
 } from './LifeCycleHandler';
-import {tryRenderRoot, setProcessing, getStartVNode} from '../TreeBuilder';
+import {tryRenderRoot, setProcessing} from '../TreeBuilder';
 import {
   BySync,
   InRender,
@@ -24,6 +24,7 @@ import {
   isSchedulingEffects,
   setSchedulingEffects, setHookEffectRoot,
 } from './HookEffectHandler';
+import {getStartVNode} from '../GlobalVar';
 
 let rootThrowError = null;
 
diff --git a/libs/horizon/src/renderer/vnode/ProcessingVNode.ts b/libs/horizon/src/renderer/vnode/ProcessingVNode.ts
deleted file mode 100644
index 1110242c..00000000
--- a/libs/horizon/src/renderer/vnode/ProcessingVNode.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import type {VNode} from '../Types';
-
-// 当前所有者是应拥有当前正在构建的任何组件的组件。
-const ProcessingVNode: { val: VNode | null } = {
-  val: null,
-};
-
-export default ProcessingVNode;
diff --git a/libs/horizon/src/renderer/vnode/VNode.ts b/libs/horizon/src/renderer/vnode/VNode.ts
index 997d8bca..810c7fb5 100644
--- a/libs/horizon/src/renderer/vnode/VNode.ts
+++ b/libs/horizon/src/renderer/vnode/VNode.ts
@@ -26,7 +26,7 @@ export class VNode {
   suspensePromises: any = null; // suspense组件的promise列表
   changeList: any = null; // DOM的变更列表
   effectList: any[] = []; // useEffect 的更新数组
-  updates: any[] = null; // TreeRoot和ClassComponent使用的更新数组
+  updates: any[] | null = null; // TreeRoot和ClassComponent使用的更新数组
   stateCallbacks: any[] = []; // 存放存在setState的第二个参数和HorizonDOM.render的第三个参数所在的node数组
   isForceUpdate: boolean = false; // 是否使用强制更新
 
@@ -76,6 +76,8 @@ export class VNode {
   path: Array<number> = []; // 保存从根到本节点的路径
   toUpdateNodes: Set<VNode> | null = null; // 保存要更新的节点
 
+  belongClassVNode: VNode | null = null; // 记录JSXElement所属class vNode，处理ref的时候使用
+
   constructor(tag: VNodeTag, props: any, key: null | string, outerDom) {
     this.tag = tag; // 对应组件的类型，比如ClassComponent等
     this.key = key;
diff --git a/libs/horizon/src/renderer/vnode/VNodeCreator.ts b/libs/horizon/src/renderer/vnode/VNodeCreator.ts
index 71c4a8dc..45648678 100644
--- a/libs/horizon/src/renderer/vnode/VNodeCreator.ts
+++ b/libs/horizon/src/renderer/vnode/VNodeCreator.ts
@@ -24,9 +24,9 @@ import {
   TYPE_MEMO, TYPE_PROFILER,
   TYPE_PROVIDER, TYPE_STRICT_MODE,
   TYPE_SUSPENSE,
-} from '../utils/elementType';
+} from '../../external/JSXElementType';
 import { VNode } from './VNode';
-import {HorizonElement} from '../Types';
+import {JSXElement} from '../Types';
 
 const typeLazyMap = {
   [TYPE_FORWARD_REF]: ForwardRef,
@@ -156,7 +156,7 @@ export function updateVNodePath(vNode: VNode) {
   vNode.path = [...vNode.parent.path, vNode.cIndex];
 }
 
-export function createVNodeFromElement(element: HorizonElement): VNode {
+export function createVNodeFromElement(element: JSXElement): VNode {
   const type = element.type;
   const key = element.key;
   const props = element.props;
diff --git a/libs/horizon/src/renderer/vnode/VNodeFlags.ts b/libs/horizon/src/renderer/vnode/VNodeFlags.ts
index 7259beb7..15e25131 100644
--- a/libs/horizon/src/renderer/vnode/VNodeFlags.ts
+++ b/libs/horizon/src/renderer/vnode/VNodeFlags.ts
@@ -19,7 +19,7 @@ export const ShouldCapture = 'ShouldCapture';
 // For suspense
 export const ForceUpdate = 'ForceUpdate';
 
-const flagArr = [Addition, Update, Deletion, ResetText, Callback, DidCapture, Ref, Snapshot, Interrupted, ShouldCapture, ForceUpdate];
+const FlagArr = [Addition, Update, Deletion, ResetText, Callback, DidCapture, Ref, Snapshot, Interrupted, ShouldCapture, ForceUpdate];
 
 const LifecycleEffectArr = [Update, Callback, Ref, Snapshot];
 
@@ -38,9 +38,10 @@ export class FlagUtils {
   }
   static hasAnyFlag(node: VNode) { // 有标志位
     let keyFlag = false;
-    flagArr.forEach(key => {
+    FlagArr.forEach(key => {
       if (node.flags[key]) {
         keyFlag = true;
+        return;
       }
     });
     return keyFlag;
diff --git a/libs/horizon/src/renderer/vnode/VNodeUtils.ts b/libs/horizon/src/renderer/vnode/VNodeUtils.ts
index 0183dd67..09ff6f0e 100644
--- a/libs/horizon/src/renderer/vnode/VNodeUtils.ts
+++ b/libs/horizon/src/renderer/vnode/VNodeUtils.ts
@@ -13,7 +13,7 @@ export function getSiblingVNode(node) {
 }
 
 export function travelChildren(beginVNode: VNode, handleVNode: Function, isFinish?: Function) {
-  let node = beginVNode;
+  let node: VNode | null = beginVNode;
 
   while (node !== null) {
     if (isFinish && isFinish(node)) {
@@ -77,10 +77,6 @@ export function travelVNodeTree(
 
 // 置空vNode
 export function clearVNode(vNode: VNode) {
-  clearOneVNode(vNode);
-}
-
-function clearOneVNode(vNode: VNode) {
   vNode.child = null;
   vNode.next = null;
   vNode.depContexts = [];
@@ -105,6 +101,8 @@ function clearOneVNode(vNode: VNode) {
 
   vNode.path = [];
   vNode.toUpdateNodes = null;
+
+  vNode.belongClassVNode = null;
 }
 
 // 是dom类型的vNode
@@ -144,6 +142,7 @@ export function findDomVNode(vNode: VNode): VNode | null {
     if (node.tag === DomComponent || node.tag === DomText) {
       return node;
     }
+    return null;
   });
 }
 
@@ -224,7 +223,7 @@ function isSameContainer(
   }
   // 注释类型的节点
   if (isComment(container) && container.parentNode === targetContainer) {
-    return true
+    return true;
   }
   return false;
 }