diff --git a/apps/ai-game-creator-shell/src/view/project-development/export/state/useXiaohongshuTab.ts b/apps/ai-game-creator-shell/src/view/project-development/export/state/useXiaohongshuTab.ts
index a5838a5b5..b54b43fe6 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/export/state/useXiaohongshuTab.ts
+++ b/apps/ai-game-creator-shell/src/view/project-development/export/state/useXiaohongshuTab.ts
@@ -1,4 +1,4 @@
-import { useMemo, useState } from 'react';
+import { useEffect, useMemo, useState } from 'react';
 
 import {
   type DirectProjectConversationReadGate,
@@ -48,6 +48,14 @@ export function useXiaohongshuTab({
    * 提交成功时 Composer 内部的 `clear()` 会经 `onDraftChange` 把空草稿回执上来。
    */
   const [draft, setDraft] = useState<UserContentPart[]>([]);
+  /**
+   * 换项目时清掉输入草稿与运行提示：面板根跨项目不卸载，两个项目又不是同一条会话，
+   * 旧项目没发出去的字不该出现在新项目的输入框里。
+   */
+  useEffect(() => {
+    setDraft([]);
+    setRuntimeNotice('');
+  }, [projectPath]);
   const chat = useDirectProjectChatController({
     enabled,
     ensureConversationReadAllowed,