diff --git a/web/src/components/Chat/ChatInput.tsx b/web/src/components/Chat/ChatInput.tsx
index 4fe6592b..c155bb22 100644
--- a/web/src/components/Chat/ChatInput.tsx
+++ b/web/src/components/Chat/ChatInput.tsx
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2025-12-10 16:46:14 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-02-09 10:26:38
+ * @Last Modified time: 2026-02-10 12:13:52
  */
 import { type FC, useEffect, useMemo } from 'react'
 import { Flex, Input, Form } from 'antd'
@@ -60,6 +60,7 @@ const ChatInput: FC<ChatInputProps> = ({
   }, [fileList])
 
   const handleSend = () => {
+    if (loading || !values || !values?.message || values?.message?.trim() === '') return
     onSend(values.message)
   }
 
diff --git a/web/src/views/ApplicationConfig/components/Chat.tsx b/web/src/views/ApplicationConfig/components/Chat.tsx
index 70194650..effb34c3 100644
--- a/web/src/views/ApplicationConfig/components/Chat.tsx
+++ b/web/src/views/ApplicationConfig/components/Chat.tsx
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 16:27:39 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-02-09 10:52:55
+ * @Last Modified time: 2026-02-10 12:18:23
  */
 /**
  * Chat debugging component for application testing
@@ -61,6 +61,8 @@ const Chat: FC<ChatProps> = ({ chatList, data, updateChatList, handleSave, sourc
 
   useEffect(() => {
     setIsCluster(source === 'multi_agent')
+    setFileList([])
+    setMessage(undefined)
   }, [source])
 
   /** Add user message to all chat lists */
@@ -388,7 +390,6 @@ const Chat: FC<ChatProps> = ({ chatList, data, updateChatList, handleSave, sourc
     setFileList([...list || []])
   }
 
-  console.log('chatList', chatList, fileList)
   return (
     <div className="rb:relative rb:h-full rb:flex rb:flex-col">
       {chatList.length === 0
diff --git a/web/src/views/Workflow/components/Chat/Chat.tsx b/web/src/views/Workflow/components/Chat/Chat.tsx
index cecfa5f6..95f43a9c 100644
--- a/web/src/views/Workflow/components/Chat/Chat.tsx
+++ b/web/src/views/Workflow/components/Chat/Chat.tsx
@@ -1,8 +1,8 @@
 /*
  * @Author: ZhaoYing 
  * @Date: 2026-02-06 21:10:56 
- * @Last Modified by:   ZhaoYing 
- * @Last Modified time: 2026-02-06 21:10:56 
+ * @Last Modified by: ZhaoYing
+ * @Last Modified time: 2026-02-10 12:17:41
  */
 /**
  * Workflow Chat Component
@@ -99,6 +99,8 @@ const Chat = forwardRef<ChatRef, { appId: string; graphRef: GraphRef }>(({ appId
     setChatList([])
     setVariables([])
     setConversationId(null)
+    setMessage(undefined)
+    setFileList([])
   }
   /**
    * Opens the variable configuration modal
@@ -148,7 +150,7 @@ const Chat = forwardRef<ChatRef, { appId: string; graphRef: GraphRef }>(({ appId
       return
     }
 
-    // setLoading(true)
+    setLoading(true)
     const message = msg
     setChatList(prev => [...prev, {
       role: 'user',
@@ -284,6 +286,7 @@ const Chat = forwardRef<ChatRef, { appId: string; graphRef: GraphRef }>(({ appId
               return newList
             })
             setStreamLoading(false)
+            setLoading(false)
             break
         }