diff --git a/PythonProject/dao/statistics_dao.py b/PythonProject/dao/statistics_dao.py
index f6576b5..9202154 100644
--- a/PythonProject/dao/statistics_dao.py
+++ b/PythonProject/dao/statistics_dao.py
@@ -186,11 +186,11 @@ def classify_salary(db):
 def avg_salary(db):
     try:
         l=db.query(Student_Model.class_id,func.avg(Employment_info.salary).label('avg_salaries'))\
-        .join(Employment_info,Employment_info.stu_id == Student_Model.stu_id)\
-        .filter(Employment_info.salary>0,Employment_info.delete_status==0,Student_Model.delete_status==0)\
-        .group_by(Student_Model.class_id)\
-        .order_by(func.avg(Employment_info.salary).desc()).all()
-        return l
+            .join(Employment_info,Employment_info.stu_id == Student_Model.stu_id)\
+            .filter(Employment_info.salary>0,Employment_info.delete_status==0,Student_Model.delete_status==0)\
+            .group_by(Student_Model.class_id)\
+            .order_by(func.avg(Employment_info.salary).desc()).all()
+        return [{'class_id':i[0],'avg_salaries':i[1]} for i in l]
     except:
         raise HTTPException(status_code=500,detail='统计异常！')