diff --git a/PythonProject/dao/teacher_dao.py b/PythonProject/dao/teacher_dao.py
index c02a3f7..f62f101 100644
--- a/PythonProject/dao/teacher_dao.py
+++ b/PythonProject/dao/teacher_dao.py
@@ -16,7 +16,7 @@ def add_teacher(req:Teacher_RequestModel,session=Depends(get_db)):
 
 def select_teacher(session=Depends(get_db)):
     try:
-        teacher_list=session.query(Teacher_Model).all()
+        teacher_list=session.query(Teacher_Model).filter(delete_status=0).all()
         return teacher_list
     except:
         raise HTTPException(status_code=500,detail="查询异常！")
@@ -24,14 +24,16 @@ def select_teacher(session=Depends(get_db)):
 def update_teacher(id:int,req:Teacher_RequestModel,session=Depends(get_db)):
     try:
         session.query(Teacher_Model).filter(Teacher_Model.teac_id==id)\
-        .update(req.model_dump(exclude_unset=True))
+        .filter(delete_status=0).update(req.model_dump(exclude_unset=True))
         session.commit()
     except:
         raise HTTPException(status_code=500,detail="更新异常！")
 
 def delete_teacher(id:int,session=Depends(get_db)):
     try:
-        session.query(Teacher_Model).filter(Teacher_Model.teac_id==id).delete()
+        session.query(Teacher_Model).filter(Teacher_Model.teac_id==id)\
+            .update(delete_status=1).delete()
+
         session.commit()
     except:
         raise HTTPException(status_code=500,detail="删除异常")