diff --git a/en/device-dev/subsystems/subsys-data-storage-guide.md b/en/device-dev/subsystems/subsys-data-storage-guide.md
index 152935dc1a60c17cfda5ba745e98321ec3a2c912..b04c82592a0266a05103a60be2752fa4c4530930 100644
--- a/en/device-dev/subsystems/subsys-data-storage-guide.md
+++ b/en/device-dev/subsystems/subsys-data-storage-guide.md
@@ -165,7 +165,7 @@ Use the following APIs to delete a **Preferences** instance or data file.
     Subscribe to data changes and invoke the callback:
     ``` C++
     std::shared_ptr<PreferencesObserver> counter =
-        std::shared_ptr<PreferencesObserver>(new PreferencesObserverCounter());
+        std::make_shared<PreferencesObserverCounter>();
     pref->RegisterObserver(counter); // Register a callback to return data changes.
 
     pref->PutString(PreferencesTest::KEY_TEST_STRING_ELEMENT, "test");
diff --git a/zh-cn/device-dev/subsystems/subsys-data-storage-guide.md b/zh-cn/device-dev/subsystems/subsys-data-storage-guide.md
index 8d3f4e2725e8986d33f9e0c2b7a74748d47b24db..95e273f55e4d046db071815cd94629fff667cd4e 100755
--- a/zh-cn/device-dev/subsystems/subsys-data-storage-guide.md
+++ b/zh-cn/device-dev/subsystems/subsys-data-storage-guide.md
@@ -165,7 +165,7 @@
     订阅数据变化，并触发执行回调方法：
     ``` C++
     std::shared_ptr<PreferencesObserver> counter =
-        std::shared_ptr<PreferencesObserver>(new PreferencesObserverCounter());
+        std::make_shared<PreferencesObserverCounter>();
     pref->RegisterObserver(counter);  // 注册数据变化的回调。
 
     pref->PutString(PreferencesTest::KEY_TEST_STRING_ELEMENT, "test");