diff --git a/collection/opendb-city-china/collection.json b/collection/opendb-city-china/collection.json
index 2e76ab9..722e822 100644
--- a/collection/opendb-city-china/collection.json
+++ b/collection/opendb-city-china/collection.json
@@ -2,6 +2,12 @@
   "schema": {
     "bsonType": "object",
     "required": ["code", "name"],
+    "permission": {
+      "read": true,
+      "create": false,
+      "update": false,
+      "delete": false
+    },
     "properties": {
       "_id": {
         "description": "ID，系统自动生成"