diff --git a/config-overrides.js b/config-overrides.js
index b05308c..df4995d 100644
--- a/config-overrides.js
+++ b/config-overrides.js
@@ -32,7 +32,8 @@ const extWebpack = (config, env) => {
     options: paths.appSrc + "/options.js",
     background: paths.appSrc + "/background.js",
     content: paths.appSrc + "/content.js",
-    injector: paths.appSrc + "/injector.js",
+    "injector-subtitle": paths.appSrc + "/injector-subtitle.js",
+    "injector-shadowroot": paths.appSrc + "/injector-shadowroot.js",
   };
 
   config.output.filename = "[name].js";
diff --git a/public/manifest.firefox.json b/public/manifest.firefox.json
index 9e1b0a1..1746136 100644
--- a/public/manifest.firefox.json
+++ b/public/manifest.firefox.json
@@ -17,7 +17,8 @@
     }
   ],
   "web_accessible_resources": [
-    "injector.js"
+    "injector-subtitle.js",
+    "injector-shadowroot.js"
   ],
   "commands": {
     "_execute_browser_action": {
diff --git a/public/manifest.json b/public/manifest.json
index 863944c..9bb1100 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -19,8 +19,12 @@
   ],
   "web_accessible_resources": [
     {
-      "resources": ["injector.js"],
+      "resources": ["injector-subtitle.js"],
       "matches": ["https://www.youtube.com/*"]
+    },
+    {
+      "resources": ["injector-shadowroot.js"],
+      "matches": ["<all_urls>"]
     }
   ],
   "commands": {
diff --git a/public/manifest.thunderbird.json b/public/manifest.thunderbird.json
index f128f87..515213a 100644
--- a/public/manifest.thunderbird.json
+++ b/public/manifest.thunderbird.json
@@ -23,7 +23,8 @@
     }
   ],
   "web_accessible_resources": [
-    "injector.js"
+    "injector-subtitle.js",
+    "injector-shadowroot.js"
   ],
   "commands": {
     "_execute_browser_action": {
diff --git a/src/injector-shadowroot.js b/src/injector-shadowroot.js
new file mode 100644
index 0000000..586302d
--- /dev/null
+++ b/src/injector-shadowroot.js
@@ -0,0 +1,3 @@
+import { shadowRootInjector } from "./injectors/shadowroot";
+
+shadowRootInjector();
diff --git a/src/injector-subtitle.js b/src/injector-subtitle.js
new file mode 100644
index 0000000..b5bd96b
--- /dev/null
+++ b/src/injector-subtitle.js
@@ -0,0 +1,3 @@
+import { XMLHttpRequestInjector } from "./injectors/xmlhttp";
+
+XMLHttpRequestInjector();
diff --git a/src/injector.js b/src/injector.js
deleted file mode 100644
index b237a93..0000000
--- a/src/injector.js
+++ /dev/null
@@ -1,3 +0,0 @@
-import { XMLHttpRequestInjector } from "./subtitle/XMLHttpRequestInjector";
-
-XMLHttpRequestInjector();
diff --git a/src/injectors/index.js b/src/injectors/index.js
new file mode 100644
index 0000000..d0cac86
--- /dev/null
+++ b/src/injectors/index.js
@@ -0,0 +1,27 @@
+import { browser } from "../libs/browser";
+import { isExt } from "../libs/client";
+import { injectExternalJs, injectInlineJs } from "../libs/injector";
+import { shadowRootInjector } from "./shadowroot";
+import { XMLHttpRequestInjector } from "./xmlhttp";
+
+export const INJECTOR = {
+  subtitle: "injector-subtitle.js",
+  shadowroot: "injector-shadowroot.js",
+};
+
+const injectorMap = {
+  [INJECTOR.subtitle]: XMLHttpRequestInjector,
+  [INJECTOR.shadowroot]: shadowRootInjector,
+};
+
+export function injectJs(name, id = "kiss-translator-inject-js") {
+  const injector = injectorMap[name];
+  if (!injector) return;
+
+  if (isExt) {
+    const src = browser.runtime.getURL(name);
+    injectExternalJs(src, id);
+  } else {
+    injectInlineJs(`(${injector})()`, id);
+  }
+}
diff --git a/src/injectors/shadowroot.js b/src/injectors/shadowroot.js
new file mode 100644
index 0000000..7c5796d
--- /dev/null
+++ b/src/injectors/shadowroot.js
@@ -0,0 +1,12 @@
+export const shadowRootInjector = () => {
+  try {
+    const orig = Element.prototype.attachShadow;
+    Element.prototype.attachShadow = function (...args) {
+      const root = orig.apply(this, args);
+      window.postMessage({ type: "KISS_SHADOW_ROOT_CREATED" }, "*");
+      return root;
+    };
+  } catch (err) {
+    console.log("shadowRootInjector", err);
+  }
+};
diff --git a/src/injectors/xmlhttp.js b/src/injectors/xmlhttp.js
new file mode 100644
index 0000000..65b6d15
--- /dev/null
+++ b/src/injectors/xmlhttp.js
@@ -0,0 +1,23 @@
+export const XMLHttpRequestInjector = () => {
+  try {
+    const originalOpen = XMLHttpRequest.prototype.open;
+    XMLHttpRequest.prototype.open = function (...args) {
+      const url = args[1];
+      if (typeof url === "string" && url.includes("timedtext")) {
+        this.addEventListener("load", function () {
+          window.postMessage(
+            {
+              type: "KISS_XHR_DATA_YOUTUBE",
+              url: this.responseURL,
+              response: this.responseText,
+            },
+            window.location.origin
+          );
+        });
+      }
+      return originalOpen.apply(this, args);
+    };
+  } catch (err) {
+    console.log("XMLHttpRequestInjector", err);
+  }
+};
diff --git a/src/libs/shadowRootMonitor.js b/src/libs/shadowRootMonitor.js
deleted file mode 100644
index bed604b..0000000
--- a/src/libs/shadowRootMonitor.js
+++ /dev/null
@@ -1,56 +0,0 @@
-import { kissLog } from "./log";
-
-/**
- * @class ShadowRootMonitor
- * @description 通过覆写 Element.prototype.attachShadow 来监控页面上所有新创建的 Shadow DOM
- */
-export default class ShadowRootMonitor {
-  /**
-   * @param {function(ShadowRoot): void} callback - 当一个新的 shadowRoot 被创建时调用的回调函数。
-   */
-  constructor(callback) {
-    if (typeof callback !== "function") {
-      throw new Error("Callback must be a function.");
-    }
-
-    this.callback = callback;
-    this.isMonitoring = false;
-    this.originalAttachShadow = Element.prototype.attachShadow;
-  }
-
-  /**
-   * 开始监控 shadowRoot 的创建。
-   */
-  start() {
-    if (this.isMonitoring) {
-      return;
-    }
-    const monitorInstance = this;
-
-    Element.prototype.attachShadow = function (...args) {
-      const shadowRoot = monitorInstance.originalAttachShadow.apply(this, args);
-      if (shadowRoot) {
-        try {
-          monitorInstance.callback(shadowRoot);
-        } catch (error) {
-          kissLog("Error in ShadowRootMonitor callback", error);
-        }
-      }
-      return shadowRoot;
-    };
-
-    this.isMonitoring = true;
-  }
-
-  /**
-   * 停止监控，并恢复原始的 attachShadow 方法。
-   */
-  stop() {
-    if (!this.isMonitoring) {
-      return;
-    }
-
-    Element.prototype.attachShadow = this.originalAttachShadow;
-    this.isMonitoring = false;
-  }
-}
diff --git a/src/libs/translator.js b/src/libs/translator.js
index d2a5061..adebf80 100644
--- a/src/libs/translator.js
+++ b/src/libs/translator.js
@@ -17,7 +17,6 @@ import {
   OPT_SPLIT_PARAGRAPH_TEXTLENGTH,
 } from "../config";
 import interpreter from "./interpreter";
-import ShadowRootMonitor from "./shadowRootMonitor";
 import { clearFetchPool } from "./pool";
 import { debounce, scheduleIdle, genEventName, truncateWords } from "./utils";
 import { apiTranslate } from "../apis";
@@ -31,6 +30,7 @@ import { createLoadingSVG } from "./svg";
 import { shortcutRegister } from "./shortcut";
 import { tryDetectLang } from "./detect";
 import { trustedTypesHelper } from "./trustedTypes";
+import { injectJs, INJECTOR } from "../injectors";
 
 /**
  * @class Translator
@@ -278,6 +278,7 @@ export class Translator {
   #rule; // 规则
   #isInitialized = false; // 初始化状态
   #isJsInjected = false; // 注入用户JS
+  #isShadowRootJsInjected = false; //
   #mouseHoverEnabled = false; // 鼠标悬停翻译
   #enabled = false; // 全局默认状态
   #runId = 0; // 用于中止过期的异步请求
@@ -305,11 +306,13 @@ export class Translator {
   #hoveredNode = null; // 存储当前悬停的可翻译节点
   #boundMouseMoveHandler; // 鼠标事件
   #boundKeyDownHandler; // 键盘事件
+  #windowMessageHandler = null;
+
+  #debouncedFindShadowRoot = null;
 
   #io; // IntersectionObserver
   #mo; // MutationObserver
   #dmm; // DebounceMouseMover
-  #srm; // ShadowRootMonitor
 
   #rescanQueue = new Set(); // “脏容器”队列
   #isQueueProcessing = false; // 队列处理状态标志
@@ -368,12 +371,12 @@ export class Translator {
     this.#io = this.#createIntersectionObserver();
     this.#mo = this.#createMutationObserver();
     this.#dmm = this.#createDebounceMouseMover();
-    this.#srm = this.#createShadowRootMonitor();
 
-    // 监控shadowroot
-    if (this.#rule.hasShadowroot === "true") {
-      this.#srm.start();
-    }
+    this.#windowMessageHandler = this.#handleWindowMessage.bind(this);
+    this.#debouncedFindShadowRoot = debounce(
+      this.#findAndObserveShadowRoot.bind(this),
+      300
+    );
 
     // 鼠标悬停翻译
     if (this.#setting.mouseHoverSetting.useMouseHover) {
@@ -410,15 +413,41 @@ export class Translator {
         this.#startObserveRoot(root);
       });
 
-    // 查找现有的所有shadowroot
     if (this.#rule.hasShadowroot === "true") {
-      try {
-        this.#findAllShadowRoots().forEach((shadowRoot) => {
-          this.#startObserveShadowRoot(shadowRoot);
-        });
-      } catch (err) {
-        kissLog("findAllShadowRoots", err);
-      }
+      this.#attachShadowRootListener();
+      this.#findAndObserveShadowRoot();
+    }
+  }
+
+  #handleWindowMessage(event) {
+    if (event.data?.type === "KISS_SHADOW_ROOT_CREATED") {
+      this.#debouncedFindShadowRoot();
+    }
+  }
+
+  #attachShadowRootListener() {
+    if (!this.#isShadowRootJsInjected) {
+      const id = "kiss-translator-inject-shadowroot-js";
+      injectJs(INJECTOR.shadowroot, id);
+
+      this.#isShadowRootJsInjected = true;
+    }
+
+    window.addEventListener("message", this.#windowMessageHandler);
+  }
+
+  #removeShadowRootListener() {
+    window.removeEventListener("message", this.#windowMessageHandler);
+  }
+
+  // 查找现有的所有shadowroot
+  #findAndObserveShadowRoot() {
+    try {
+      this.#findAllShadowRoots().forEach((shadowRoot) => {
+        this.#startObserveShadowRoot(shadowRoot);
+      });
+    } catch (err) {
+      kissLog("findAllShadowRoots", err);
     }
   }
 
@@ -611,13 +640,6 @@ export class Translator {
     }, 100);
   }
 
-  // 创建shadowroot的回调
-  #createShadowRootMonitor() {
-    return new ShadowRootMonitor((shadowRoot) => {
-      this.#startObserveShadowRoot(shadowRoot);
-    });
-  }
-
   // 跟踪鼠标下的可翻译节点
   #handleMouseMove(event) {
     let targetNode = event.composedPath()[0];
@@ -1527,6 +1549,8 @@ export class Translator {
 
   // 停止监听，重置参数
   #resetOptions() {
+    this.#removeShadowRootListener();
+
     this.#io.disconnect();
     this.#mo.disconnect();
     this.#viewNodes.clear();
@@ -1697,7 +1721,6 @@ export class Translator {
   stop() {
     this.disable();
     this.#resetOptions();
-    this.#srm.stop();
     this.#disableMouseHover();
     this.#removeInjector();
     this.#isInitialized = false;
diff --git a/src/libs/webfix.js b/src/libs/webfix.js
deleted file mode 100644
index a686786..0000000
--- a/src/libs/webfix.js
+++ /dev/null
@@ -1,158 +0,0 @@
-/**
- * 修复程序类型
- */
-export const FIXER_NONE = "-";
-export const FIXER_BR = "br";
-export const FIXER_BN = "bn";
-export const FIXER_BR_DIV = "brToDiv";
-export const FIXER_BN_DIV = "bnToDiv";
-
-export const FIXER_ALL = [
-  FIXER_NONE,
-  FIXER_BR,
-  FIXER_BN,
-  FIXER_BR_DIV,
-  FIXER_BN_DIV,
-];
-
-/**
- * 修复过的标记
- */
-const fixedSign = "kiss-fixed";
-
-/**
- * 采用 `br` 换行网站的修复函数
- * 目标是将 `br` 替换成 `p`
- * @param {*} node
- * @returns
- */
-function brFixer(node, tag = "p") {
-  if (node.hasAttribute(fixedSign)) {
-    return;
-  }
-  node.setAttribute(fixedSign, "true");
-
-  const gapTags = ["BR", "WBR"];
-  const newlineTags = [
-    "DIV",
-    "UL",
-    "OL",
-    "LI",
-    "H1",
-    "H2",
-    "H3",
-    "H4",
-    "H5",
-    "H6",
-    "P",
-    "HR",
-    "PRE",
-    "TABLE",
-    "BLOCKQUOTE",
-  ];
-
-  let html = "";
-  node.childNodes.forEach(function (child, index) {
-    if (index === 0) {
-      html += `<${tag} class="kiss-p">`;
-    }
-
-    if (gapTags.indexOf(child.nodeName) !== -1) {
-      html += `</${tag}><${tag} class="kiss-p">`;
-    } else if (newlineTags.indexOf(child.nodeName) !== -1) {
-      html += `</${tag}>${child.outerHTML}<${tag} class="kiss-p">`;
-    } else if (child.outerHTML) {
-      html += child.outerHTML;
-    } else if (child.textContent) {
-      html += child.textContent;
-    }
-
-    if (index === node.childNodes.length - 1) {
-      html += `</${tag}>`;
-    }
-  });
-  node.innerHTML = html;
-}
-
-function brDivFixer(node) {
-  return brFixer(node, "div");
-}
-
-/**
- * 目标是将 `\n` 替换成 `p`
- * @param {*} node
- * @returns
- */
-function bnFixer(node, tag = "p") {
-  if (node.hasAttribute(fixedSign)) {
-    return;
-  }
-  node.setAttribute(fixedSign, "true");
-  node.innerHTML = node.innerHTML
-    .split("\n")
-    .map((item) => `<${tag} class="kiss-p">${item || "&nbsp;"}</${tag}>`)
-    .join("");
-}
-
-function bnDivFixer(node) {
-  return bnFixer(node, "div");
-}
-
-/**
- * 查找、监听节点，并执行修复函数
- * @param {*} selector
- * @param {*} fixer
- * @param {*} rootSelector
- */
-function run(selector, fixer, rootSelector) {
-  const mutaObserver = new MutationObserver(function (mutations) {
-    mutations.forEach(function (mutation) {
-      mutation.addedNodes.forEach(function (addNode) {
-        if (addNode && addNode.querySelectorAll) {
-          addNode.querySelectorAll(selector).forEach(function (node) {
-            fixer(node);
-          });
-        }
-      });
-    });
-  });
-
-  let rootNodes = [document];
-  if (rootSelector) {
-    rootNodes = document.querySelectorAll(rootSelector);
-  }
-
-  rootNodes.forEach(function (rootNode) {
-    rootNode.querySelectorAll(selector).forEach(function (node) {
-      fixer(node);
-    });
-    mutaObserver.observe(rootNode, {
-      childList: true,
-      subtree: true,
-    });
-  });
-}
-
-/**
- * 修复程序映射
- */
-const fixerMap = {
-  [FIXER_BR]: brFixer,
-  [FIXER_BN]: bnFixer,
-  [FIXER_BR_DIV]: brDivFixer,
-  [FIXER_BN_DIV]: bnDivFixer,
-};
-
-/**
- * 执行fixer
- * @param {*} param0
- */
-export function runFixer(selector, fixer = "-", rootSelector) {
-  try {
-    if (Object.keys(fixerMap).includes(fixer)) {
-      run(selector, fixerMap[fixer], rootSelector);
-    }
-  } catch (err) {
-    console.error(`[kiss-webfix run]: ${err.message}`);
-  }
-}
diff --git a/src/subtitle/XMLHttpRequestInjector.js b/src/subtitle/XMLHttpRequestInjector.js
deleted file mode 100644
index 460c317..0000000
--- a/src/subtitle/XMLHttpRequestInjector.js
+++ /dev/null
@@ -1,19 +0,0 @@
-export const XMLHttpRequestInjector = () => {
-  const originalOpen = XMLHttpRequest.prototype.open;
-  XMLHttpRequest.prototype.open = function (...args) {
-    const url = args[1];
-    if (typeof url === "string" && url.includes("timedtext")) {
-      this.addEventListener("load", function () {
-        window.postMessage(
-          {
-            type: "KISS_XHR_DATA_YOUTUBE",
-            url: this.responseURL,
-            response: this.responseText,
-          },
-          window.location.origin
-        );
-      });
-    }
-    return originalOpen.apply(this, args);
-  };
-};
diff --git a/src/subtitle/subtitle.js b/src/subtitle/subtitle.js
index 937726e..61147fe 100644
--- a/src/subtitle/subtitle.js
+++ b/src/subtitle/subtitle.js
@@ -1,18 +1,15 @@
 import { YouTubeInitializer } from "./YouTubeCaptionProvider.js";
-import { browser } from "../libs/browser.js";
 import { isMatch } from "../libs/utils.js";
 import { DEFAULT_API_SETTING } from "../config/api.js";
 import { DEFAULT_SUBTITLE_SETTING } from "../config/setting.js";
-import { injectExternalJs } from "../libs/injector.js";
 import { logger } from "../libs/log.js";
-import { XMLHttpRequestInjector } from "./XMLHttpRequestInjector.js";
-import { injectInlineJs } from "../libs/injector.js";
+import { injectJs, INJECTOR } from "../injectors/index.js";
 
 const providers = [
   { pattern: "https://www.youtube.com", start: YouTubeInitializer },
 ];
 
-export function runSubtitle({ href, setting, isUserscript }) {
+export function runSubtitle({ href, setting }) {
   try {
     const subtitleSetting = setting.subtitleSetting || DEFAULT_SUBTITLE_SETTING;
     if (!subtitleSetting.enabled) {
@@ -21,13 +18,8 @@ export function runSubtitle({ href, setting, isUserscript }) {
 
     const provider = providers.find((item) => isMatch(href, item.pattern));
     if (provider) {
-      const id = "kiss-translator-xmlHttp-injector";
-      if (isUserscript) {
-        injectInlineJs(`(${XMLHttpRequestInjector})()`, id);
-      } else {
-        const src = browser.runtime.getURL("injector.js");
-        injectExternalJs(src, id);
-      }
+      const id = "kiss-translator-inject-subtitle-js";
+      injectJs(INJECTOR.subtitle, id);
 
       const apiSetting =
         setting.transApis.find(