diff --git a/data_chain/apps/service/document_service.py b/data_chain/apps/service/document_service.py
index a3e8d324f43d9979b6096f369e4d54ef3c27efe5..3e4c53823d81de6398cbcea71db7e3c52cfdcea7 100644
--- a/data_chain/apps/service/document_service.py
+++ b/data_chain/apps/service/document_service.py
@@ -372,7 +372,7 @@ async def stop_temporary_document_parse_task(doc_id):
 
 async def delete_temporary_document(doc_ids) -> List[TemporaryDocumentDTO]:
     if len(doc_ids) == 0:
-        return 0
+        return []
     try:
         # 删除document表的记录
         for doc_id in doc_ids: