diff --git a/api/apps/document_app.py b/api/apps/document_app.py
index 45f89ff..00188be 100644
--- a/api/apps/document_app.py
+++ b/api/apps/document_app.py
@@ -72,17 +72,24 @@ router = APIRouter()
 @router.post("/upload")
 async def upload(
     kb_id: str = Form(...),
-    file: UploadFile = File(...),
+    file: List[UploadFile] = File(...),
     current_user = Depends(get_current_user)
 ):
     """上传文档"""
     if not file:
         return get_json_result(data=False, message="No file part!", code=settings.RetCode.ARGUMENT_ERROR)
     
-    if not file.filename or file.filename == "":
-        return get_json_result(data=False, message="No file selected!", code=settings.RetCode.ARGUMENT_ERROR)
-    if len(file.filename.encode("utf-8")) > FILE_NAME_LEN_LIMIT:
-        return get_json_result(data=False, message=f"File name must be {FILE_NAME_LEN_LIMIT} bytes or less.", code=settings.RetCode.ARGUMENT_ERROR)
+    valid_files: List[UploadFile] = []
+    for upload_file in file:
+        if not upload_file or not upload_file.filename:
+            return get_json_result(data=False, message="No file selected!", code=settings.RetCode.ARGUMENT_ERROR)
+        if len(upload_file.filename.encode("utf-8")) > FILE_NAME_LEN_LIMIT:
+            return get_json_result(
+                data=False,
+                message=f"File '{upload_file.filename}' name must be {FILE_NAME_LEN_LIMIT} bytes or less.",
+                code=settings.RetCode.ARGUMENT_ERROR
+            )
+        valid_files.append(upload_file)
 
     e, kb = KnowledgebaseService.get_by_id(kb_id)
     if not e:
@@ -90,7 +97,7 @@ async def upload(
     if not check_kb_team_permission(kb, current_user.id):
         return get_json_result(data=False, message="No authorization.", code=settings.RetCode.AUTHENTICATION_ERROR)
 
-    err, uploaded_files = FileService.upload_document(kb, [file], current_user.id)
+    err, uploaded_files = FileService.upload_document(kb, valid_files, current_user.id)
     if err:
         return get_json_result(data=uploaded_files, message="\n".join(err), code=settings.RetCode.SERVER_ERROR)