diff --git a/api/@internal/component/ets/common.d.ts b/api/@internal/component/ets/common.d.ts
index 4ebfb501cb2c4f852fae295b413210dc8e9c4d89..23b05409b79f14a7a147b510e40d8cb51f47013e 100644
--- a/api/@internal/component/ets/common.d.ts
+++ b/api/@internal/component/ets/common.d.ts
@@ -20,9 +20,10 @@ declare const Component: ClassDecorator;
 
 /**
  * Defining Entry ClassDecorator.
- * @since 7
+ * Only API 9 and later support parameters.
+ * @since 9
  */
-declare const Entry: ClassDecorator;
+declare const Entry: ClassDecorator & ((storage?: LocalStorage) => ClassDecorator);
 
 /**
  * Defining Observed ClassDecorator.
@@ -120,6 +121,25 @@ declare const Extend: MethodDecorator & ((value: any) => MethodDecorator);
  */
 declare const CustomDialog: ClassDecorator;
 
+/**
+ * Defining LocalStorageLink PropertyDecorator.
+ * @since 9
+ */
+declare const LocalStorageLink: (value: string) => PropertyDecorator;
+
+/**
+ * Defining LocalStorageProp PropertyDecorator.
+ * @since 9
+ */
+declare const LocalStorageProp: (value: string) => PropertyDecorator;
+
+/**
+ * Get context.
+ * @StageModelOnly
+ * @since 9
+ */
+declare function getContext(component?: Object): Object;
+ 
 /**
  * Defines the data type of the interface restriction.
  * @since 7
diff --git a/api/@internal/component/ets/state_management.d.ts b/api/@internal/component/ets/state_management.d.ts
index 310e1ad62b0872b0dfbe070d478c686ef60e4ac0..116989c36d283412ddb701261dae99e1e7d73e3c 100644
--- a/api/@internal/component/ets/state_management.d.ts
+++ b/api/@internal/component/ets/state_management.d.ts
@@ -585,6 +585,98 @@ declare abstract class SubscribaleAbstract {
   public removeOwningPropertyById(subscriberId: number): void;
 }
 
+/**
+ * Defining LocalStorage.
+ * @since 9
+ */
+declare class LocalStorage {
+  /**
+   * constructor.
+   * @since 9
+   */
+  constructor(initializingProperties?: Object);
+
+  /**
+   * Get current LocalStorage shared from stage.
+   * @StageModelOnly
+   * @since 9
+   */
+  static GetShared(): LocalStorage;
+
+  /**
+   * return true if prooperty with given name exists
+   * @since 9
+   */
+  has(propName: string): boolean;
+
+  /**
+   * return a Map Iterator
+   * @since 9
+   */
+  keys(): IterableIterator<string>;
+
+  /**
+   * return number of properties
+   * @since 9
+   */
+  size(): number;
+
+  /**
+   * returns value of given property
+   * @since 9
+   */
+  get<T>(propName: string): T;
+
+  /**
+   * Set value of given property
+   * @since 9
+   */
+  set<T>(propName: string, newValue: T): boolean;
+
+  /**
+   * add property if not property with given name
+   * @since 9
+   */
+  setOrCreate<T>(propName: string, newValue: T): boolean;
+
+  /**
+   * create and return a 'link' (two-way sync) to named property
+   * @since 9
+   */
+  link<T>(propName: string, linkUser?: T, subscribersName?: string): T;
+
+  /**
+   * Like link(), will create and initialize a new source property in LocalStorge if missing
+   * @since 9
+   */
+  setAndLink<T>(propName: string, defaultValue: T, linkUser?: T, subscribersName?: string): T;
+
+  /**
+   * create and return a 'prop' (one-way sync) to named property
+   * @since 9
+   */
+  prop<T>(propName: string, propUser?: T, subscribersName?: string): T;
+
+  /**
+   * Like prop(), will create and initialize a new source property in LocalStorage if missing
+   * @since 9
+   */
+  setAndProp<T>(propName: string, defaultValue: T, propUser?: T, subscribersName?: string): T;
+  
+  /**
+   * Delete property from StorageBase
+   * @since 9
+   * @returns false if method failed
+   */
+  delete(propName: string): boolean;
+
+  /**
+   * delete all properties from the StorageBase
+   * @since 9
+   */
+  clear(): boolean;
+}
+
 /**
  * Used for ide.
  * @since 7
diff --git a/api/@ohos.window.d.ts b/api/@ohos.window.d.ts
index c73851031bf907ceeac42851e3d4e6929c86c4cb..988080d255af111a9841458da9d2b30e3565bc6b 100644
--- a/api/@ohos.window.d.ts
+++ b/api/@ohos.window.d.ts
@@ -14,7 +14,7 @@
 */
 import { AsyncCallback, Callback } from './basic' ;
 import { Context } from  './app/context';
-import { ContentStorage } from './@internal/component/ets/stateManagement'
+import { LocalStorage } from './@internal/component/ets/stateManagement'
 /**
  * Window manager.
  * @syscap SystemCapability.WindowManager.WindowManager.Core
@@ -588,7 +588,7 @@ declare namespace window {
      * @syscap SystemCapability.WindowManager.WindowManager.Core
      * @since 9
      */
-    loadContent(path: string, storage: ContentStorage, callback: AsyncCallback<void>): void;
+    loadContent(path: string, storage: LocalStorage, callback: AsyncCallback<void>): void;
 
     /**
      * Loads content
@@ -597,7 +597,7 @@ declare namespace window {
      * @syscap SystemCapability.WindowManager.WindowManager.Core
      * @since 9
      */
-    loadContent(path: string, storage: ContentStorage): Promise<void>;
+    loadContent(path: string, storage: LocalStorage): Promise<void>;
 
     /**
      * Loads content
@@ -867,7 +867,7 @@ declare namespace window {
      * @syscap SystemCapability.WindowManager.WindowManager.Core
      * @since 9
      */
-    loadContent(path: string, storage: ContentStorage, callback: AsyncCallback<void>): void;
+    loadContent(path: string, storage: LocalStorage, callback: AsyncCallback<void>): void;
     /**
      * Loads content
      * @param path path of the page to which the content will be loaded
@@ -875,7 +875,7 @@ declare namespace window {
      * @syscap SystemCapability.WindowManager.WindowManager.Core
      * @since 9
      */
-    loadContent(path: string, storage?: ContentStorage): Promise<void>;
+    loadContent(path: string, storage?: LocalStorage): Promise<void>;
     /**
      * Loads content
      * @param path path of the page to which the content will be loaded
diff --git a/api/application/AbilityContext.d.ts b/api/application/AbilityContext.d.ts
index 39bafa4e517a1ea89b518dc2f67c48c4195448b9..23f0676224a95182e166bc77d44d9f3b9ccc4fcf 100755
--- a/api/application/AbilityContext.d.ts
+++ b/api/application/AbilityContext.d.ts
@@ -24,7 +24,7 @@ import StartOptions from "../@ohos.application.StartOptions";
 import PermissionRequestResult from "./PermissionRequestResult";
 import { Configuration } from '../@ohos.application.Configuration';
 import Caller from '../@ohos.application.Ability';
-import { ContentStorage } from '../@internal/component/ets/state_management';
+import { LocalStorage } from '../@internal/component/ets/stateManagement';
 import image from '../@ohos.multimedia.image';
 
 /**
@@ -241,9 +241,9 @@ export default class AbilityContext extends Context {
      *
      * @since 9
      * @syscap SystemCapability.Ability.AbilityRuntime.Core
-     * @param contentStorage the storage data used to restore window stage
+     * @param LocalStorage the storage data used to restore window stage
      * @StageModelOnly
      */
-    restoreWindowStage(contentStorage: ContentStorage) : void;
+    restoreWindowStage(localStorage: LocalStorage) : void;
 
 }
\ No newline at end of file