diff --git a/collection/uni-id-address/collection.json b/collection/uni-id-address/collection.json
index 04ad21a..79383c9 100644
--- a/collection/uni-id-address/collection.json
+++ b/collection/uni-id-address/collection.json
@@ -24,7 +24,7 @@
       },
       "mobile_area_code": {
         "bsonType": "string",
-        "description": "手机号码区号"
+        "description": "国际区号，中国大陆为 +86"
       },
       "telephone": {
         "bsonType": "string",