diff --git a/PythonProject/api/statistics_api.py b/PythonProject/api/statistics_api.py
index a5f2867..649c779 100644
--- a/PythonProject/api/statistics_api.py
+++ b/PythonProject/api/statistics_api.py
@@ -6,7 +6,7 @@ from util.database import get_db
 
 StatisticsAPI = APIRouter(tags=['统计分析模块'])
 
-@StatisticsAPI.get("/age",response_model=list[StudentResponse],summary='根据年龄查询学生信息')
+@StatisticsAPI.get("/age",response_model=list[StugetResponse],summary='根据年龄查询学生信息')
 def get_students(min_age:int|None=Query(None,ge=0,le=150),max_age:int|None=Query(None,ge=0,le=150),db=Depends(get_db)):
     l = select_age(min_age,max_age,db)
     return l
diff --git a/PythonProject/dao/statistics_dao.py b/PythonProject/dao/statistics_dao.py
index fd8251d..0306a61 100644
--- a/PythonProject/dao/statistics_dao.py
+++ b/PythonProject/dao/statistics_dao.py
@@ -38,8 +38,11 @@ def select_all(db):
                 "gender": i.gender,
                 "cnt": i.cnt
             })
-
+        if not l2:
+            raise HTTPException(status_code=404, detail="没有数据")
         return l2
+    except HTTPException:
+        raise
     except Exception:
         raise HTTPException(status_code=500,detail="查询异常")
 
@@ -66,7 +69,10 @@ def select_score(min_score,max_score,db):
             db = db.filter(WlScore.score >= min_score)
         if max_score is not None:
             db = db.filter(WlScore.score <= max_score)
-        return db.all()
+        l1 = db.all()
+        if not l1:
+            raise HTTPException(status_code=404, detail="没有数据")
+        return l1
     except HTTPException:
         raise
     except Exception:
@@ -80,7 +86,11 @@ def select_avg_score(db):
             .filter(WlScore.delete_status==0,Student_Model.delete_status == 0)\
             .group_by(Student_Model.class_id)\
             .order_by(func.round(func.avg(WlScore.score),1)).all()
+        if not l1:
+            raise HTTPException(status_code=404, detail="没有数据")
         return l1
+    except HTTPException:
+        raise
     except Exception:
         raise HTTPException(status_code=500,detail="查询异常")
 
@@ -102,7 +112,11 @@ def select_salary(db):
             .filter(Employment_info.delete_status==0,Student_Model.delete_status == 0)\
             .order_by(Employment_info.salary.desc())\
             .limit(5).all()
+        if not l1:
+            raise HTTPException(status_code=404, detail="没有数据")
         return l1
+    except HTTPException:
+        raise
     except Exception:
         raise HTTPException(status_code=500,detail="查询异常")
 
@@ -123,19 +137,27 @@ def select_avg_days(db):
                     Employment_info.offer_issuance_date.isnot(None),)\
             .group_by(Student_Model.class_id)\
             .order_by(func.avg(func.datediff(Employment_info.offer_issuance_date,Student_Model.admission_date)).desc()).all()
+        if not l1:
+            raise HTTPException(status_code=404, detail="没有数据")
         return l1
+    except HTTPException:
+        raise
     except Exception:
         raise HTTPException(status_code=500, detail="查询异常")
 
 #统计每个学⽣的就业时⻓
 def select_days(db):
     try:
-        l2 =db.query(Employment_info.stu_id
+        l1 =db.query(Employment_info.stu_id
                     ,func.coalesce(func.datediff(Employment_info.offer_issuance_date
                                    ,Employment_info.employment_opening_date),0)\
                      .label("diff_days")
                      ).filter(Employment_info.delete_status == 0).all()
-        return l2
+        if not l1:
+            raise HTTPException(status_code=404, detail="没有数据")
+        return l1
+    except HTTPException:
+        raise
     except Exception:
         raise HTTPException(status_code=500, detail="查询异常")