diff --git a/collection/uni-id-address/collection.json b/collection/uni-id-address/collection.json
index 8b68a6b..308d53a 100644
--- a/collection/uni-id-address/collection.json
+++ b/collection/uni-id-address/collection.json
@@ -40,6 +40,17 @@
         "description": "电话区号",
         "title": "电话区号"
       },
+      "city_id": {
+        "bsonType": "string",
+        "title": "地址",
+        "description": "城市编码",
+        "enumType": "tree",
+        "enum": {
+          "collection": "opendb-city-china",
+          "orderby": "value asc",
+          "field": "code as value, name as text"
+        }
+      },
       "province_code": {
         "bsonType": "string",
         "description": "省级编码",