diff --git a/frontend-web/src/pages/IframeChatPage.tsx b/frontend-web/src/pages/IframeChatPage.tsx
index c365a176..602491ba 100644
--- a/frontend-web/src/pages/IframeChatPage.tsx
+++ b/frontend-web/src/pages/IframeChatPage.tsx
@@ -33,6 +33,15 @@ import {
 } from "./iframe-chat-submit";
 
 type BrainyChatStatus = "started" | "finished";
+type BrainyChatInterruptMessage = {
+  source?: string;
+  type?: string;
+  payload?: {
+    reason?: string;
+    requestId?: string;
+  };
+  requestId?: string;
+};
 
 function postBrainyChatStatus(status: BrainyChatStatus, requestId: string) {
   window.parent?.postMessage(
@@ -206,10 +215,34 @@ export default function IframeChatPage() {
     [sendMessage, threadId],
   );
 
+  const handleInterrupt = useCallback(
+    async (message: BrainyChatInterruptMessage) => {
+      const targetRequestId = message.payload?.requestId?.trim();
+      if (targetRequestId) {
+        pendingRequestIdRef.current = targetRequestId;
+      }
+
+      console.log("收到插件中断消息", {
+        reason: message.payload?.reason,
+        requestId: message.requestId,
+        targetRequestId,
+      });
+
+      await thread.stop();
+    },
+    [thread],
+  );
+
   useEffect(() => {
-    const handleMessage = (event: MessageEvent<BrainyChatSubmitMessage>) => {
+    const handleMessage = (
+      event: MessageEvent<BrainyChatSubmitMessage | BrainyChatInterruptMessage>,
+    ) => {
       const data = event.data;
       if (data?.source !== "brainy-extension") return;
+      if (data?.type === "brainy:chat-interrupt") {
+        void handleInterrupt(data);
+        return;
+      }
       if (data?.type !== "brainy:chat-submit") return;
 
       const { submitText, files, iframeContext, additionalKwargs } =
@@ -241,7 +274,7 @@ export default function IframeChatPage() {
     return () => {
       window.removeEventListener("message", handleMessage);
     };
-  }, [handleSubmit]);
+  }, [handleInterrupt, handleSubmit]);
 
   const messageListPaddingBottom = showFollowups
     ? MESSAGE_LIST_DEFAULT_PADDING_BOTTOM +