diff --git a/server/apps/supervision/views2.py b/server/apps/supervision/views2.py
index 0f239f1..96e8225 100644
--- a/server/apps/supervision/views2.py
+++ b/server/apps/supervision/views2.py
@@ -6,8 +6,8 @@ from utils.sql import query_all_dict
 
 class YearSerializer(serializers.Serializer):
     year = serializers.IntegerField(label='年份')
-    dept_name = serializers.CharField(label='单位名称', default='', allow_null=True)
-    dept_type_name = serializers.CharField(label='单位类型', default='2级公司', allow_null=True)
+    dept_name = serializers.CharField(label='单位名称', default='', allow_blank=True)
+    dept_type_name = serializers.CharField(label='单位类型', default='2级公司', allow_blank=True)
 
 class AnalyseViewSet(GenericViewSet):
     perms_map = {'post': '*'}