diff --git a/server/serializers.py b/server/serializers.py
index 9fdfdf3..b79890d 100644
--- a/server/serializers.py
+++ b/server/serializers.py
@@ -108,12 +108,6 @@ class FilterConfigSerializer(serializers.ModelSerializer):
         fields = "__all__"
         read_only_fields = ["id", "created_at", "updated_at"]
 
-    def to_representation(self, instance):
-        """响应中 is_active 统一为字符串 "true" / "false"。"""
-        data = super().to_representation(instance)
-        data["is_active"] = "true" if instance.is_active else "false"
-        return data
-
     def to_internal_value(self, data):
         """请求中兼容 minAmount/maxAmount、最小金额/最大金额 等别名，统一为 min_amount/max_amount。"""
         if isinstance(data, dict):