diff --git a/zh-cn/application-dev/reference/apis/js-apis-data-rdb.md b/zh-cn/application-dev/reference/apis/js-apis-data-rdb.md
index adb20e571d28636745b0bb02ab8428693dc5b627..b2b3cdd04722a53fd7713b3bdfd2407b6da454c6 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-data-rdb.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-data-rdb.md
@@ -386,7 +386,7 @@ deviceManager.createDeviceManager("com.example.appdatamgrverify", (err, manager)
     }
 })
                                   
-let predicates = new relationalStore.RdbPredicates("EMPLOYEE");
+let predicates = new data_rdb.RdbPredicates("EMPLOYEE");
 predicates.inDevices(deviceIds);
 ```