diff --git a/apps/third/serializers.py b/apps/third/serializers.py
index e4cf48a0..507ed2b3 100755
--- a/apps/third/serializers.py
+++ b/apps/third/serializers.py
@@ -86,7 +86,7 @@ class BltSerializer(serializers.ModelSerializer):
 
 
 class BltQuerySerializer(serializers.ModelSerializer):
-    depts = serializers.ListField(child=serializers.CharField(), label="部门ID列表", required=False, allow_blank=True)
+    depts = serializers.ListField(child=serializers.CharField(), label="部门ID列表", required=False)
 
     class Meta:
         model = TDevice