diff --git a/api/@ohos.data.preference.d.ts b/api/@ohos.data.preference.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6d53b3a3d9cf5def4301df2ec8f5ab482bcac84f
--- /dev/null
+++ b/api/@ohos.data.preference.d.ts
@@ -0,0 +1,218 @@
+/*
+* Copyright (c) 2022 Huawei Device Co., Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+import { AsyncCallback, Callback } from './basic';
+
+/**
+ * Provides interfaces to obtain and modify preference data.
+ *
+ * @name preference
+ * @since 8
+ * @sysCap SystemCapability.Data#DATA_APPDATAMGR
+ * @devices phone, tablet
+ */
+declare namespace preference {
+    /**
+     * Obtains a {@link Preference} instance matching a specified preference file name.
+     *
+     * <p>The {@link references} instance loads all data of the preference file and
+     * resides in the memory. You can use removePreferenceFromCache to remove the instance from the memory.
+     *
+     * @param path Indicates the path of preference file stored.
+     * @return Returns the {@link Preference} instance matching the specified preference file name.
+     * @throws BusinessError if invoked failed
+     * @since 8
+     */
+    function getPreferenceSync(path: string): Preference;
+    function getPreference(path: string, callback: AsyncCallback<Preference>): void;
+    function getPreference(path: string): Promise<Preference>;
+
+    /**
+     * Deletes a {@link Preference} instance matching a specified preference file name
+     * from the cache which is performed by removePreferenceFromCache and deletes the
+     * preference file.
+     *
+     * <p>When deleting the {@link Preference} instance, you must release all references
+     * of the instance. In addition, do not use the instance to perform data operations. Otherwise, data inconsistency
+     * will occur.
+     *
+     * @param path Indicates the path of preference file
+     * @throws BusinessError if invoked failed
+     * @since 8
+     */
+    function deletePreferenceSync(path: string): void;
+    function deletePreference(path: string, callback: AsyncCallback<void>): void;
+    function deletePreference(path: string): Promise<void>;
+
+    /**
+     * Deletes a {@link Preference} instance matching a specified preference file name
+     * from the cache.
+     *
+     * <p>When deleting the {@link Preference} instance, you must release all references
+     * of the instance. In addition, do not use the instance to perform data operations. Otherwise, data inconsistency
+     * will occur.
+     *
+     * @param path Indicates the path of preference file.
+     * @throws BusinessError if invoked failed
+     * @since 8
+     */
+    function removePreferenceFromCacheSync(path: string): void;
+    function removePreferenceFromCache(path: string, callback: AsyncCallback<void>): void;
+    function removePreferenceFromCache(path: string): Promise<void>;
+
+    /**
+     * Provides interfaces to obtain and modify preference data.
+     *
+     * <p>The preference data is stored in a file, which matches only one {@link Preference} instance in the memory.
+     * You can use getPreference to obtain the {@link Preference} instance matching
+     * the file that stores preference data, and use emovePreferenceFromCache
+     * to remove the {@link Preference} instance from the memory.
+     *
+     * @sysCap SystemCapability.Data#DATA_APPDATAMGR
+     * @devices phone, tablet
+     * @since 8
+     */
+    interface Preference {
+        /**
+        * Obtains the value of a preference in the int format.
+        *
+        * <p>If the value is {@code null} or not in the int format, the default value is returned.
+        *
+        * @param key Indicates the key of the preference. It cannot be {@code null} or empty.
+        * @param defValue Indicates the default value to return.
+        * @return Returns the value matching the specified key if it is found; returns the default value otherwise.
+        * @throws BusinessError if invoked failed
+        * @since 8
+        */
+        getSync(key: string, defValue: ValueType): ValueType;
+        get(key: string, defValue: ValueType, callback: AsyncCallback<ValueType>): void;
+        get(key: string, defValue: ValueType): Promise<ValueType>;
+
+        /**
+         * Checks whether the {@link Preference} object has a preference matching a specified key.
+         *
+         * @param key Indicates the key of the preference to check for.
+         * @return Returns {@code true} if the {@link Preference} object has a preference with the specified key;
+         * returns {@code false} otherwise.
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        hasSync(key: string): boolean;
+        has(key: string, callback: AsyncCallback<boolean>): boolean;
+        has(key: string): Promise<boolean>;
+
+        /**
+         * Sets an int value for the key in the {@link Preference} object.
+         *
+         * <p>You can call the {@link #flush} or {@link #flushSync} method to save the {@link Preference} object to the
+         * file.
+         *
+         * @param key Indicates the key of the preference to modify. It cannot be {@code null} or empty.
+         * @param value Indicates the value of the preference.
+         * <tt>MAX_KEY_LENGTH</tt>.
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        putSync(key: string, value: ValueType): void;
+        put(key: string, value: ValueType, callback: AsyncCallback<void>): void;
+        put(key: string, value: ValueType): Promise<void>;
+
+        /**
+         * Deletes the preference with a specified key from the {@link Preference} object.
+         *
+         * <p>You can call the {@link #flush} method to save the {@link Preference} object to the
+         * file.
+         *
+         * @param key Indicates the key of the preference to delete. It cannot be {@code null} or empty.
+         * <tt>MAX_KEY_LENGTH</tt>.
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        deleteSync(key: string): void;
+        delete(key: string, callback: AsyncCallback<void>): void;
+        delete(key: string): Promise<void>;
+
+        /**
+         * Clears all preference from the {@link Preference} object.
+         *
+         * <p>You can call the {@link #flush} method to save the {@link Preference} object to the
+         * file.
+         *
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        clearSync(): void;
+        clear(callback: AsyncCallback<void>): void;
+        clear(): Promise<void>;
+
+        /**
+         * Saves the {@link Preference} object to the file.
+         *
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        flushSync(): void;
+        flush(callback: AsyncCallback<void>): void;
+        flush(): Promise<void>;
+
+        /**
+         * Registers an observer to listen for the change of a {@link Preference} object.
+         *
+         * @param callback Indicates the callback when preference changes.
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        on(type: 'change', callback: Callback<PreferenceObserver>): void;
+
+        /**
+         * Unregisters an existing observer.
+         *
+         * @param callback Indicates the registered callback.
+         * @throws BusinessError if invoked failed
+         * @since 8
+         */
+        off(type: 'change', callback: Callback<PreferenceObserver>): void;
+    }
+
+    /**
+     * Indicates possible value types
+     */
+    type ValueType = number | string | boolean;
+
+    /**
+     * Define the change data information object.
+     *
+     * @sysCap SystemCapability.Data#DATA_APPDATAMGR
+     * @devices phone, tablet
+     * @since 8
+     */
+    interface PreferenceObserver {
+        /**
+         * Indicates which key changes
+         */
+        key: string;
+    }
+
+    /**
+     * Indicates the maximum length of a key (80 characters).
+     */
+    const MAX_KEY_LENGTH: 80;
+
+    /**
+     * Indicates the maximum length of a string (8192 characters).
+     */
+    const MAX_VALUE_LENGTH: 8192;
+}
+
+export default preference;
\ No newline at end of file
diff --git a/api/@ohos.data.storage.d.ts b/api/@ohos.data.storage.d.ts
index 937ce3ad4a09f48e1be7fe85fe1f8d6be23cd43a..11f9ed6ef1e196c57dfc0734652eef6eb9bee8d4 100644
--- a/api/@ohos.data.storage.d.ts
+++ b/api/@ohos.data.storage.d.ts
@@ -21,6 +21,7 @@ import { AsyncCallback, Callback } from './basic';
  * @since 5
  * @sysCap SystemCapability.Data#DATA_APPDATAMGR
  * @devices phone, tablet
+ * @deprecated
  */
 declare namespace storage {
     /**
@@ -33,6 +34,7 @@ declare namespace storage {
      * @return Returns the {@link Storage} instance matching the specified storage file name.
      * @throws BusinessError if invoked failed
      * @since 5
+     * @deprecated
      */
     function getStorageSync(path: string): Storage;
     function getStorage(path: string, callback: AsyncCallback<Storage>): void;
@@ -50,6 +52,7 @@ declare namespace storage {
      * @param path Indicates the path of storage file
      * @throws BusinessError if invoked failed
      * @since 5
+     * @deprecated
      */
     function deleteStorageSync(path: string): void;
     function deleteStorage(path: string, callback: AsyncCallback<void>): void;
@@ -66,6 +69,7 @@ declare namespace storage {
      * @param path Indicates the path of storage file.
      * @throws BusinessError if invoked failed
      * @since 5
+     * @deprecated
      */
     function removeStorageFromCacheSync(path: string): void;
     function removeStorageFromCache(path: string, callback: AsyncCallback<void>): void;
@@ -82,6 +86,7 @@ declare namespace storage {
      * @sysCap SystemCapability.Data#DATA_APPDATAMGR
      * @devices phone, tablet
      * @since 5
+     * @deprecated
      */
     interface Storage {
         /**
@@ -94,19 +99,21 @@ declare namespace storage {
         * @return Returns the value matching the specified key if it is found; returns the default value otherwise.
         * @throws BusinessError if invoked failed
         * @since 5
+        * @deprecated
         */
         getSync(key: string, defValue: ValueType): ValueType;
         get(key: string, defValue: ValueType, callback: AsyncCallback<ValueType>): void;
         get(key: string, defValue: ValueType): Promise<ValueType>;
 
         /**
-         * Checks whether the {@link Storage} object contains a storage matching a specified key.
+         * Checks whether the {@link Storage} object has a storage matching a specified key.
          *
          * @param key Indicates the key of the storage to check for.
-         * @return Returns {@code true} if the {@link Storage} object contains a storage with the specified key;
+         * @return Returns {@code true} if the {@link Storage} object has a storage with the specified key;
          * returns {@code false} otherwise.
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         hasSync(key: string): boolean;
         has(key: string, callback: AsyncCallback<boolean>): boolean;
@@ -123,6 +130,7 @@ declare namespace storage {
          * <tt>MAX_KEY_LENGTH</tt>.
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         putSync(key: string, value: ValueType): void;
         put(key: string, value: ValueType, callback: AsyncCallback<void>): void;
@@ -138,6 +146,7 @@ declare namespace storage {
          * <tt>MAX_KEY_LENGTH</tt>.
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         deleteSync(key: string): void;
         delete(key: string, callback: AsyncCallback<void>): void;
@@ -151,16 +160,18 @@ declare namespace storage {
          *
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         clearSync(): void;
         clear(callback: AsyncCallback<void>): void;
         clear(): Promise<void>;
 
         /**
-         * Asynchronously saves the {@link Storage} object to the file.
+         * Saves the {@link Storage} object to the file.
          *
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         flushSync(): void;
         flush(callback: AsyncCallback<void>): void;
@@ -172,6 +183,7 @@ declare namespace storage {
          * @param callback Indicates the callback when storage changes.
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         on(type: 'change', callback: Callback<StorageObserver>): void;
 
@@ -181,6 +193,7 @@ declare namespace storage {
          * @param callback Indicates the registered callback.
          * @throws BusinessError if invoked failed
          * @since 5
+         * @deprecated
          */
         off(type: 'change', callback: Callback<StorageObserver>): void;
     }
@@ -196,6 +209,7 @@ declare namespace storage {
      * @sysCap SystemCapability.Data#DATA_APPDATAMGR
      * @devices phone, tablet
      * @since 5
+     * @deprecated
      */
     interface StorageObserver {
         /**