diff --git a/pilot/openapi/knowledge/knowledge_service.py b/pilot/openapi/knowledge/knowledge_service.py
index 4ad9dcec3..8f0f184d6 100644
--- a/pilot/openapi/knowledge/knowledge_service.py
+++ b/pilot/openapi/knowledge/knowledge_service.py
@@ -115,6 +115,8 @@ class KnowledgeService:
                 space=space_name,
             )
             doc = knowledge_document_dao.get_knowledge_documents(query)[0]
+            if doc.status == SyncStatus.RUNNING.name or doc.status == SyncStatus.FINISHED.name:
+                raise Exception(f"RUNNING AND FINISHED doc:{doc.name} can not sync")
             client = KnowledgeEmbedding(
                 knowledge_source=doc.content,
                 knowledge_type=doc.doc_type.upper(),