diff --git a/apps/em/serializers.py b/apps/em/serializers.py
index 74ace2a3..8f1592ff 100644
--- a/apps/em/serializers.py
+++ b/apps/em/serializers.py
@@ -22,8 +22,8 @@ class EcheckRecordSerializer(CustomModelSerializer):
         read_only_fields = EXCLUDE_FIELDS
 
     def validate(self, attrs):
-        attrs = super().validate(attrs)
         check_date = attrs['check_date']
         if EcheckRecord.objects.filter(check_date__gte=check_date, equipment=attrs['equipment']).exists():
             raise ValidationError('检定日期小于历史记录')
+        return attrs