diff --git a/api/app/controllers/chunk_controller.py b/api/app/controllers/chunk_controller.py
index a0b985bf..cfe36a3a 100644
--- a/api/app/controllers/chunk_controller.py
+++ b/api/app/controllers/chunk_controller.py
@@ -546,6 +546,7 @@ async def delete_chunk(
         kb_id: uuid.UUID,
         document_id: uuid.UUID,
         doc_id: str,
+        force_refresh: bool = Query(False, description="Force Elasticsearch refresh after deletion"),
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user)
 ):
@@ -563,7 +564,7 @@ async def delete_chunk(
 
     vector_service = ElasticSearchVectorFactory().init_vector(knowledge=db_knowledge)
     if vector_service.text_exists(doc_id):
-        vector_service.delete_by_ids([doc_id])
+        vector_service.delete_by_ids([doc_id], refresh=force_refresh)
         # 更新 chunk_num
         db_document = db.query(Document).filter(Document.id == document_id).first()
         db_document.chunk_num -= 1
diff --git a/api/app/controllers/service/rag_api_chunk_controller.py b/api/app/controllers/service/rag_api_chunk_controller.py
index a4d9a20c..c9f5e7de 100644
--- a/api/app/controllers/service/rag_api_chunk_controller.py
+++ b/api/app/controllers/service/rag_api_chunk_controller.py
@@ -176,6 +176,7 @@ async def delete_chunk(
     request: Request,
     api_key_auth: ApiKeyAuth = None,
     db: Session = Depends(get_db),
+    force_refresh: bool = Query(False, description="Force Elasticsearch refresh after deletion"),
 ):
     """
     delete document chunk
@@ -188,6 +189,7 @@ async def delete_chunk(
     return await chunk_controller.delete_chunk(kb_id=kb_id,
                                                document_id=document_id,
                                                doc_id=doc_id,
+                                               force_refresh=force_refresh,
                                                db=db,
                                                current_user=current_user)
 
diff --git a/api/app/core/rag/vdb/elasticsearch/elasticsearch_vector.py b/api/app/core/rag/vdb/elasticsearch/elasticsearch_vector.py
index cd52550b..5f9e86c5 100644
--- a/api/app/core/rag/vdb/elasticsearch/elasticsearch_vector.py
+++ b/api/app/core/rag/vdb/elasticsearch/elasticsearch_vector.py
@@ -142,7 +142,7 @@ class ElasticSearchVector(BaseVector):
 
         return True
 
-    def delete_by_ids(self, ids: list[str]):
+    def delete_by_ids(self, ids: list[str], *, refresh: bool = False):
         if not ids:
             return
         if not self._client.indices.exists(index=self._collection_name):
@@ -163,6 +163,8 @@ class ElasticSearchVector(BaseVector):
             actions = [{"_op_type": "delete", "_index": self._collection_name, "_id": es_id} for es_id in actual_ids]
             try:
                 helpers.bulk(self._client, actions)
+                if refresh:
+                    self._client.indices.refresh(index=self._collection_name)
             except BulkIndexError as e:
                 for error in e.errors:
                     delete_error = error.get('delete', {})
@@ -182,7 +184,7 @@ class ElasticSearchVector(BaseVector):
         else:
             return None
 
-    def delete_by_metadata_field(self, key: str, value: str):
+    def delete_by_metadata_field(self, key: str, value: str, *, refresh: bool = False):
         if not self._client.indices.exists(index=self._collection_name):
             return False
         actual_ids = self.get_ids_by_metadata_field(key, value)
@@ -191,6 +193,8 @@ class ElasticSearchVector(BaseVector):
             actions = [{"_op_type": "delete", "_index": self._collection_name, "_id": es_id} for es_id in actual_ids]
             try:
                 helpers.bulk(self._client, actions)
+                if refresh:
+                    self._client.indices.refresh(index=self._collection_name)
             except BulkIndexError as e:
                 for error in e.errors:
                     delete_error = error.get('delete', {})
diff --git a/api/app/core/rag/vdb/vector_base.py b/api/app/core/rag/vdb/vector_base.py
index df3ac7d8..266a3f40 100644
--- a/api/app/core/rag/vdb/vector_base.py
+++ b/api/app/core/rag/vdb/vector_base.py
@@ -27,14 +27,14 @@ class BaseVector(ABC):
         raise NotImplementedError
 
     @abstractmethod
-    def delete_by_ids(self, ids: list[str]):
+    def delete_by_ids(self, ids: list[str], *, refresh: bool = False):
         raise NotImplementedError
 
     def get_ids_by_metadata_field(self, key: str, value: str):
         raise NotImplementedError
 
     @abstractmethod
-    def delete_by_metadata_field(self, key: str, value: str):
+    def delete_by_metadata_field(self, key: str, value: str, *, refresh: bool = False):
         raise NotImplementedError
 
     @abstractmethod