diff --git a/EduSystemServer/Student/views.py b/EduSystemServer/Student/views.py
index 1e8e18e..252a674 100644
--- a/EduSystemServer/Student/views.py
+++ b/EduSystemServer/Student/views.py
@@ -1,8 +1,10 @@
 from django.shortcuts import render
 # Create your views here.
+from django.http import HttpRequest
 from django.http import JsonResponse
 from EduSystemServer.utils import ResponseUtil
 from .models import Student
+from course.models import SC, Course
 from django.views.decorators.csrf import csrf_exempt
 from django.http import QueryDict
 from io import BytesIO
@@ -63,8 +65,8 @@ def studnets(request):
                 data.append(student.to_dict())
         else:
             all_objects = Student.objects.all()
-            for studnet in all_objects:
-                data.append(studnet.to_dict())
+            for student in all_objects:
+                data.append(student.to_dict())
         response = ResponseUtil.ok(data, "查询成功！")
         return JsonResponse(response)
     elif request.method == "DELETE":
@@ -87,18 +89,33 @@ def studnets(request):
         grade = put[0]['grade']
         class_name = put[0]['class_name']
         major = put[0]['major']
-        try:
+        if Student.objects.filter(sid=sid):
             Student.objects.filter(sid=sid).update(username=username, name=name, sex=sex, grade=grade,
                                                    class_name=class_name,
                                                    major=major)
-        except:
-            Student.objects.create(sid=sid, username=username, name=name, sex=sex, grade=grade,
-                                   class_name=class_name,
-                                   major=major)
+        else:
+            return JsonResponse(ResponseUtil.error("没有查询到该同学！"))
         data = Student.objects.filter(sid=sid)[0].to_dict()
         return JsonResponse(ResponseUtil.ok(data, "修改成功！"))
 
 
-def get_select_course_by_id(request):
+def search_grade(request):
+    if request.method == "GET":
+        sid = request.GET.get('sid')
+        cid = SC.objects.filter(sid_id=sid).values()
+        data_list = []
+        for i in range(len(cid)):
+            c_name = Course.objects.filter(cid=cid[i]['cid_id']).values('name')[0]['name']
+            middle_grade = cid[i]['middle_grade']
+            end_grade = cid[i]['end_grade']
+            data = {
+                'c_name': c_name,
+                '平时成绩': middle_grade,
+                '最终成绩': end_grade
+            }
+            data_list.append(data)
+        return JsonResponse(ResponseUtil.ok(data_list, "成绩查询成功！"))
 
+
+def get_select_course_by_id(request):
     pass