diff --git a/src/index.js b/src/index.js
index 8619f9c..0c02149 100644
--- a/src/index.js
+++ b/src/index.js
@@ -153,11 +153,16 @@ async function handleCardInteraction(event) {
       const { profile_name, bucket, path_key } = actionData.value;
       log('📋 选择上传配置:', profile_name);
       
-      // path_key 是预设路径的名称，需要从配置中获取实际路径
+      // 清除之前的文件信息，确保必须重新上传文件
+      const state = getUserState(chatId);
       setUserState(chatId, {
         profile_name,
         bucket,
-        path_key
+        path_key,
+        // 清除文件信息
+        file_key: undefined,
+        file_name: undefined,
+        message_id: undefined
       });
       
       await feishu.sendMessage(chatId, {
@@ -209,6 +214,7 @@ async function handleCardInteraction(event) {
       await doUpload(chatId, feishu, uploader, {
         file_key, file_name, message_id, bucket, upload_path, path_label, path_key
       });
+      // 上传成功后清除所有状态（包括文件信息）
       clearUserState(chatId);
       break;
     }
@@ -320,11 +326,15 @@ async function handleFileReceived(messageData, feishu, uploader) {
   
   if (!fileKey) return;
   
-  // 保存文件信息到状态
+  // 清除之前的配置，保存新文件信息（覆盖旧文件）
   setUserState(chatId, {
     file_key: fileKey,
     file_name: fileName,
-    message_id: messageId
+    message_id: messageId,
+    // 清除之前的配置选择
+    profile_name: undefined,
+    bucket: undefined,
+    path_key: undefined
   });
   
   const state = getUserState(chatId);