diff --git a/sdk/methods/conversation/Conversation.class.js b/sdk/methods/conversation/Conversation.class.js
index 61235f160705cc91391c0f620fa311467fe97cee..74960273f7de1f47551a22b9829d698e2d5ed8d7 100644
--- a/sdk/methods/conversation/Conversation.class.js
+++ b/sdk/methods/conversation/Conversation.class.js
@@ -308,9 +308,9 @@ class Conversation {
           // console.error('last_visible_msg',_last_visible_msg)
           note = $utils.getMsgNote(_last_visible_msg)
         }
-        // 去掉\\n \\r \n \r 换行符
-        note = note.replace(/\\n|\\r|\n|\r/g, ' ')
-        return note
+        // 替换\\n \\r \n \r   < > & 为 空格
+        note = note.replace(/\\n|\\r|\n|\r| |<|>|&/g, ' ')
+        return note.trim()
       },
       // 刷新会话的更新时间
       update_time:{