diff --git a/api/class_api.py b/api/class_api.py
index c278f07..e581d82 100644
--- a/api/class_api.py
+++ b/api/class_api.py
@@ -48,7 +48,7 @@ def get_classes( id:int|None = None
 @classes_router.delete('/{id}',response_model=ClassResponse,summary='删除班级信息')
 def delete_classes(id:int,db=Depends(get_db)):
     r = delete_classes_dao( id , db )
-    if not r :
+    if  r :
         return ClassResponse( total=1,data='已成功删除班级信息' )
     else :
         raise HTTPException(status_code=500, detail='删除失败，该班级信息已不存在或服务器繁忙，请稍后更新！')
\ No newline at end of file
diff --git a/dao/class_dao.py b/dao/class_dao.py
index ef28b6a..870745d 100644
--- a/dao/class_dao.py
+++ b/dao/class_dao.py
@@ -52,7 +52,7 @@ def get_classes_dao( class_id, class_no , class_name , page , page_size , db ):
 
 def delete_classes_dao( class_id , db  ):
     try :
-        db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ).update( Classes.is_deleted == 1 )
+        db.query( Classes ).filter( Classes.id == class_id , Classes.is_deleted == 0 ).update( {"is_deleted": 1} )
     except :
         db.rollback()
         return False