diff --git a/libs/extension/src/background/index.ts b/libs/extension/src/background/index.ts
index 6a8c4591..01e455f8 100644
--- a/libs/extension/src/background/index.ts
+++ b/libs/extension/src/background/index.ts
@@ -51,6 +51,7 @@ chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) {
       changeSource(message, DevToolBackground);
       connections[tabId].postMessage(message);
     } else {
+      // TODO: 如果查询失败，发送 chrome message，请求 panel 主动建立连接
       console.log('Tab not found in connection list.');
     }
   } else {
diff --git a/libs/extension/src/injector/index.ts b/libs/extension/src/injector/index.ts
index 940f0ab9..73692427 100644
--- a/libs/extension/src/injector/index.ts
+++ b/libs/extension/src/injector/index.ts
@@ -134,6 +134,7 @@ let helper;
 
 function init(horizonHelper) {
   helper = horizonHelper;
+  window.__HORIZON_DEV_HOOK__.isInit = true;
 }
 
 function injectHook() {
@@ -144,6 +145,7 @@ function injectHook() {
     enumerable: false,
     value: {
       init,
+      isInit: false,
       addIfNotInclude,
       send,
       deleteVNode,
diff --git a/libs/horizon/src/external/devtools.ts b/libs/horizon/src/external/devtools.ts
index 38167db5..10e70e80 100644
--- a/libs/horizon/src/external/devtools.ts
+++ b/libs/horizon/src/external/devtools.ts
@@ -74,7 +74,7 @@ export const helper = {
   },
 };
 
-function injectUpdater() {
+export function injectUpdater() {
   const hook = window.__HORIZON_DEV_HOOK__;
   if (hook) {
     hook.init(helper);
diff --git a/libs/horizon/src/renderer/TreeBuilder.ts b/libs/horizon/src/renderer/TreeBuilder.ts
index 8fff0435..923b4275 100644
--- a/libs/horizon/src/renderer/TreeBuilder.ts
+++ b/libs/horizon/src/renderer/TreeBuilder.ts
@@ -36,6 +36,7 @@ import {
   updateShouldUpdateOfTree
 } from './vnode/VNodeShouldUpdate';
 import { getPathArr } from './utils/vNodePath';
+import { injectUpdater } from '../external/devtools';
 
 // 不可恢复错误
 let unrecoverableErrorDuringBuild: any = null;
@@ -281,6 +282,11 @@ function renderFromRoot(treeRoot) {
 
   if (window.__HORIZON_DEV_HOOK__) {
     const hook = window.__HORIZON_DEV_HOOK__;
+    // injector.js 可能在 Horizon 代码之后加载，此时无 __HORIZON_DEV_HOOK__ 全局变量
+    // Horizon 代码初次加载时不会初始化 helper
+    if (!hook.isInit) {
+      injectUpdater();
+    }
     hook.addIfNotInclude(treeRoot);
     hook.send(treeRoot);
   }