diff --git a/PythonProject/api/grade_api.py b/PythonProject/api/grade_api.py
index 5aa4f17..c0a33f0 100644
--- a/PythonProject/api/grade_api.py
+++ b/PythonProject/api/grade_api.py
@@ -20,6 +20,6 @@ def post_grade(o:GradeRequest=Form(),db=Depends(get_db)):
     r=add_grade_dao(g=d,db=db)
     if not r:
         raise HTTPException(status_code=400, detail='学生不存在')
-    return GradeResponse
+    return o
 
 
diff --git a/PythonProject/dao/grade_dao.py b/PythonProject/dao/grade_dao.py
index 0b13d41..9471ae7 100644
--- a/PythonProject/dao/grade_dao.py
+++ b/PythonProject/dao/grade_dao.py
@@ -17,9 +17,8 @@ def add_grade_dao(g,db):
     try:
         o1 = WlScore(**g)
         db.add(o1)
-    except:
-        db.rollback()
-        return False
-    else:
         db.commit()
-        return True
\ No newline at end of file
+        return o1
+    except Exception:
+        db.rollback()
+        return None
\ No newline at end of file