diff --git a/chat/server/src/main/java/com/tencent/supersonic/chat/server/persistence/mapper/ChatParseMapper.java b/chat/server/src/main/java/com/tencent/supersonic/chat/server/persistence/mapper/ChatParseMapper.java
index c733c5abb..282f3b789 100644
--- a/chat/server/src/main/java/com/tencent/supersonic/chat/server/persistence/mapper/ChatParseMapper.java
+++ b/chat/server/src/main/java/com/tencent/supersonic/chat/server/persistence/mapper/ChatParseMapper.java
@@ -18,4 +18,6 @@ public interface ChatParseMapper {
     List<ChatParseDO> getParseInfoList(List<Long> questionIds);
 
     List<ChatParseDO> getContextualParseInfo(Integer chatId);
+
+    int deleteByQuestionId(Long questionId);
 }
diff --git a/chat/server/src/main/resources/mapper/ChatParseMapper.xml b/chat/server/src/main/resources/mapper/ChatParseMapper.xml
index 8e1e5336a..8cb2cf8e8 100644
--- a/chat/server/src/main/resources/mapper/ChatParseMapper.xml
+++ b/chat/server/src/main/resources/mapper/ChatParseMapper.xml
@@ -52,4 +52,9 @@
         where chat_id = #{chatId}  order by question_id desc  limit 10
     </select>
 
+    <delete id="deleteByQuestionId">
+        delete from s2_chat_parse
+        where question_id = #{questionId}
+    </delete>
+
 </mapper>