diff --git a/apps/enm/serializers.py b/apps/enm/serializers.py
index 0e022364..93066a4c 100644
--- a/apps/enm/serializers.py
+++ b/apps/enm/serializers.py
@@ -34,7 +34,7 @@ class MpointSerializer(CustomModelSerializer):
                 raise ParseError('分配集错误')
             mgroupIds.append(i['mgroup'])
             i['mgroup_name'] = Mgroup.objects.get(id=i['mgroup']).name
-        if round(ratio_, 3) != 1.0:
+        if attrs['mgroups_allocate'] and round(ratio_, 3) != 1.0:
             raise ParseError('比例合计错误')
         return attrs