diff --git a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
index 0ca8b0a8..41c16cb6 100644
--- a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
+++ b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
@@ -252,11 +252,7 @@ function insertOrAppendPlacementNode(
   const { tag, realNode } = node;
 
   if (isDomVNode(node)) {
-    if (beforeDom) {
-      insertDomBefore(parent, realNode, beforeDom);
-    } else {
-      appendChildElement(parent, realNode);
-    }
+    insertDom(parent, realNode, beforeDom);
   } else if (tag === DomPortal) {
     // 这里不做处理，直接在portal中处理
   } else {
@@ -269,6 +265,14 @@ function insertOrAppendPlacementNode(
   }
 }
 
+function insertDom(parent, realNode, beforeDom) {
+  if (beforeDom) {
+    insertDomBefore(parent, realNode, beforeDom);
+  } else {
+    appendChildElement(parent, realNode);
+  }
+}
+
 // 遍历所有子节点：删除dom节点，detach ref 和 调用componentWillUnmount()
 function unmountDomComponents(vNode: VNode): void {
   let currentParentIsValid = false;
@@ -337,11 +341,7 @@ function submitClear(vNode: VNode): void {
   // 在所有子项都卸载后，删除dom树中的节点
   removeChildDom(currentParent, vNode.realNode);
   const realNodeNext = getSiblingDom(vNode);
-  if (realNodeNext) {
-    insertDomBefore(currentParent, cloneDom, realNodeNext);
-  } else {
-    appendChildElement(currentParent, cloneDom);
-  }
+  insertDom(currentParent, cloneDom, realNodeNext);
   vNode.realNode = cloneDom;
   attachRef(vNode);
   FlagUtils.removeFlag(vNode, Clear);