diff --git a/pkg/common/db/controller/msg.go b/pkg/common/db/controller/msg.go
index 2b4222a58..43d39104b 100644
--- a/pkg/common/db/controller/msg.go
+++ b/pkg/common/db/controller/msg.go
@@ -292,17 +292,6 @@ func (db *commonMsgDatabase) BatchInsertChat2DB(ctx context.Context, conversatio
 	return db.BatchInsertBlock(ctx, conversationID, msgs, updateKeyMsg, msgList[0].Seq)
 }
 
-func (db *commonMsgDatabase) MarkUserDeleteMsg(ctx context.Context, conversationID string, seq int64, userIDs []string) error {
-	if len(userIDs) == 0 {
-		return nil
-	}
-	msgs := make([]any, len(userIDs))
-	for i, userID := range userIDs {
-		msgs[i] = userID
-	}
-	return db.BatchInsertBlock(ctx, conversationID, msgs, updateKeyDel, seq)
-}
-
 func (db *commonMsgDatabase) RevokeMsg(ctx context.Context, conversationID string, seq int64, revoke *unRelationTb.RevokeModel) error {
 	return db.BatchInsertBlock(ctx, conversationID, []any{revoke}, updateKeyRevoke, seq)
 }