diff --git a/server/apps/edu/serializers.py b/server/apps/edu/serializers.py
index 6c3f8ea..70a2a36 100644
--- a/server/apps/edu/serializers.py
+++ b/server/apps/edu/serializers.py
@@ -1,8 +1,14 @@
 from rest_framework import serializers
 from apps.edu.models import Certificate
+from apps.edu.services import make_img_x
 
 class CertificateSerializer(serializers.ModelSerializer):
     class Meta:
         model = Certificate
         fields = '__all__'
-        read_only_fields = ['create_time', 'update_time', 'create_by', 'update_by', 'is_deleted']
\ No newline at end of file
+        read_only_fields = ['create_time', 'update_time', 'create_by', 'update_by', 'is_deleted']
+
+    def save(self, **kwargs):
+        instance = super().save(**kwargs)
+        make_img_x(instance)
+        return instance
\ No newline at end of file
diff --git a/server/apps/edu/services.py b/server/apps/edu/services.py
index 58c8df1..ff2b7e0 100644
--- a/server/apps/edu/services.py
+++ b/server/apps/edu/services.py
@@ -1,5 +1,19 @@
 from PIL import ImageFont, ImageDraw, Image
 from django.conf import settings
+from apps.edu.models import Certificate
+
+def make_img_x(instance: Certificate):
+    titles = []
+    if instance.是否内审员:
+        titles.append('内审员')
+    if instance.是否授权签字人:
+        titles.append('授权签字人')
+    if instance.是否质量负责人:
+        titles.append('质量负责人')
+    if instance.是否最高管理者:
+        titles.append('最高管理者')
+    instance.证书地址 = make_img(instance.证书编号, instance.姓名, '、'.join(titles))
+    instance.save()
 
 def make_img(number, name, title):
     # 打开底版图片
diff --git a/server/apps/edu/views.py b/server/apps/edu/views.py
index 7956210..b6c4654 100644
--- a/server/apps/edu/views.py
+++ b/server/apps/edu/views.py
@@ -1,18 +1,15 @@
-from django.shortcuts import render
-from rest_framework.viewsets import GenericViewSet, ModelViewSet
+from rest_framework.viewsets import ModelViewSet
 from apps.system.mixins import CreateUpdateCustomMixin
 from apps.edu.serializers import CertificateSerializer
 from apps.edu.models import Certificate
 from rest_framework.decorators import action
-from django.db import transaction
 from django.conf import settings
 from rest_framework.exceptions import ParseError
 from rest_framework.response import Response
 from openpyxl import load_workbook
-from apps.edu.services import make_img
 from rest_framework.serializers import Serializer
-from django.db import transaction
 from rest_framework.permissions import AllowAny
+from apps.edu.services import make_img_x
 # Create your views here.
 
 class CertificateViewSet(CreateUpdateCustomMixin, ModelViewSet):
@@ -34,24 +31,11 @@ class CertificateViewSet(CreateUpdateCustomMixin, ModelViewSet):
             return [AllowAny()]
         return super().get_permissions()
 
-    def make_img_x(self, instance):
-        titles = []
-        if instance.是否内审员:
-            titles.append('内审员')
-        if instance.是否授权签字人:
-            titles.append('授权签字人')
-        if instance.是否质量负责人:
-            titles.append('质量负责人')
-        if instance.是否最高管理者:
-            titles.append('最高管理者')
-        instance.证书地址 = make_img(instance.证书编号, instance.姓名, '、'.join(titles))
-        instance.save()
-
     def retrieve(self, request, *args, **kwargs):
         regen_img = request.query_params.get('regen_img', False)
         instance = self.get_object()
         if not instance.证书地址 or regen_img:
-            self.make_img_x(instance)
+            make_img_x(instance)
         serializer = self.get_serializer(instance)
         return Response(serializer.data)