diff --git a/collection/opendb-open-data/collection.json b/collection/opendb-open-data/collection.json
index 07276f1..999b4ee 100644
--- a/collection/opendb-open-data/collection.json
+++ b/collection/opendb-open-data/collection.json
@@ -5,7 +5,7 @@
     "properties": {
       "_id": {
         "bsonType": "string",
-        "description": "key，格式：uni-id:[dcloudAppid]:[platform]:[openid]:[access-token|user-access-token|session-key|encrypt-key-version|ticket]"
+        "description": "key，格式：uni-id:[provider]:[appid]:[openid]:[access-token|user-access-token|session-key|encrypt-key-version|ticket]"
       },
       "value": {
         "bsonType": "object",