diff --git a/apps/qm/serializers.py b/apps/qm/serializers.py
index b9ab9224..50c8fb6d 100644
--- a/apps/qm/serializers.py
+++ b/apps/qm/serializers.py
@@ -184,6 +184,7 @@ class FtestWorkCreateUpdateSerializer(CustomModelSerializer):
                 FtestworkDefect.objects.create(ftestwork=ins, **ftestworkdefect)
             if ftestworkdefect:
                 ins.cal_count()
+        return ins
 
     def update(self, instance, validated_data):
         ftestworkdefect = validated_data.pop("ftestworkdefect", [])