diff --git a/src/messaging/ExtensionMessage.ts b/src/messaging/ExtensionMessage.ts
index 4bd452c..7e72528 100644
--- a/src/messaging/ExtensionMessage.ts
+++ b/src/messaging/ExtensionMessage.ts
@@ -108,52 +108,6 @@ class ExtensionMessage {
         this.portIdToPort.delete(id)
       })
     })
-
-    /**
-     * Note: Return true when sending a response asynchronously.
-     */
-    // chrome.runtime.onMessage.addListener((event: MessageData, sender: chrome.runtime.MessageSender, sendResponse: (result: any) => void) => {
-    //   this.debug((sender.tab != null) ? `tab ${sender.tab.url ?? ''} => ` : 'extension => ', event)
-
-    //   // check event target
-    //   if (event.target !== MESSAGE_TARGET_EXTENSION) return
-
-    //   const method = this.methods?.[event.method]
-    //   if (method != null) {
-    //     method(event.params, {
-    //       from: event.from,
-    //       event,
-    //       sender,
-    //     }).then(data => sendResponse({
-    //       success: true,
-    //       code: 200,
-    //       data,
-    //     })).catch(err => {
-    //       console.error(err)
-    //       let message
-    //       if (err instanceof Error) {
-    //         message = err.message
-    //       } else if (typeof err === 'string') {
-    //         message = err
-    //       } else {
-    //         message = 'error: ' + JSON.stringify(err)
-    //       }
-    //       sendResponse({
-    //         success: false,
-    //         code: 500,
-    //         message,
-    //       })
-    //     })
-    //     return true
-    //   } else {
-    //     console.error('Unknown method:', event.method)
-    //     sendResponse({
-    //       success: false,
-    //       code: 501,
-    //       message: 'Unknown method: ' + event.method,
-    //     })
-    //   }
-    // })
   }
 
   broadcastMessageExact = async (tabIds: number[], target: string, method: string, params?: any) => {
diff --git a/src/messaging/InjectMessage.ts b/src/messaging/InjectMessage.ts
index 7e181ca..fbad9c0 100644
--- a/src/messaging/InjectMessage.ts
+++ b/src/messaging/InjectMessage.ts
@@ -75,25 +75,6 @@ class InjectMessage {
         this.portMessageHandler!.startListen()
         this.portMessageHandler!.init('inject')
         this.methods = methods
-        // listen message from app
-        // startListening({}).then(e => {
-        //     const { postMessage, listenMessage, destroy } = e
-        //     this.postMessageToApp = postMessage
-        //     listenMessage((method, params, sendResponse) => {
-        //         this.messageHandler({
-        //             from: 'app',
-        //             target: MESSAGE_TARGET_INJECT,
-        //             method,
-        //             params,
-        //         }, null, sendResponse)
-        //     })
-        // }).catch(console.error)
-
-        /**
-         * listen message from extension
-         * Attention: return true if you need to sendResponse asynchronously
-         */
-        // chrome.runtime.onMessage.addListener(this.messageHandler)
     }
 
     sendExtension = async <T = any>(method: string, params?: any): Promise<T> => {
diff --git a/src/messaging/useMessageService.ts b/src/messaging/useMessageService.ts
index dc5da8f..41484e9 100644
--- a/src/messaging/useMessageService.ts
+++ b/src/messaging/useMessageService.ts
@@ -92,65 +92,6 @@ const useMessageService = (methods?: {
       return pmh
     }
   }, [messageHandler, port])
-
-  // connect to inject
-  // useEffect(() => {
-  //   let destroyFunc: (() => void) | undefined
-
-  //   const serverObject = {
-  //     server: window.parent, // openedWindow / window.parent / window.opener;
-  //     origin: '*', // target-window's origin or *
-  //   }
-  //   const options = {}
-  //   callServer(serverObject, options).then(e => {
-  //     const { postMessage, listenMessage, destroy } = e
-  //     postInjectMessage = postMessage
-  //     destroyFunc = destroy
-
-  //     listenMessage((method, params, sendResponse) => {
-  //       debug('inject => ', method, params)
-
-  //       const success = messageHandler(method, params, {
-  //         from: 'inject',
-  //         event: {
-  //           method,
-  //           params,
-  //         },
-  //       })
-  //       sendResponse({
-  //         success,
-  //         code: success ? 200 : 500
-  //       })
-  //     })
-
-  //     debug('message ready')
-  //   }).catch(console.error)
-
-  //   return () => {
-  //     destroyFunc?.()
-  //   }
-  // }, [messageHandler])
-
-  // const extensionMessageCallback = useCallback((event: MessageData, sender: chrome.runtime.MessageSender, sendResponse: (response?: any) => void) => {
-  //   debug((sender.tab != null) ? `tab ${sender.tab.url??''} => ` : 'extension => ', JSON.stringify(event))
-
-  //   // check event target
-  //   if (!event || event.target !== MESSAGE_TARGET_APP) return
-
-  //   messageHandler(event.method, event.params, {
-  //     from: 'extension',
-  //     event,
-  //     sender,
-  //   })
-  // }, [messageHandler])
-
-  // // listen for message
-  // useEffect(() => {
-  //   chrome.runtime.onMessage.addListener(extensionMessageCallback)
-  //   return () => {
-  //     chrome.runtime.onMessage.removeListener(extensionMessageCallback)
-  //   }
-  // }, [extensionMessageCallback])
 }
 
 export default useMessageService