diff --git a/api/@ohos.uitest.d.ts b/api/@ohos.uitest.d.ts
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+/*
+ * 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 "ASIS" 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.
+ */
+
+/**
+ * Enumerates the string value match pattern.
+ *
+ * @since 8
+ */
+ enum MatchPattern{
+   /**Equals to a string.*/
+   EQUALS = 0,
+   /**Contains a substring.*/
+   CONTAINS = 1,
+   /**StartsWith a substring.*/
+   STARTS_WITH = 2,
+   /**EndsWith a substring.*/
+   ENDS_WITH = 3
+}
+
+/**
+ * Describes the attribute requirements for the target UiComponents.
+ *
+ * @since 8
+ * @syscap SystemCapability.Test.UiTest
+ */
+ class By{
+   /**
+    * Specifies the text for the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param txt the text value.
+    * @param pattern the {@link MatchPattern} of the text value,default to {@link MatchPattern.EQUALS}
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   text(txt:string,pattern?:MatchPattern):By;
+
+   /**
+    * Specifies the inspectorKey of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param key the inspectorKey value.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   key(key:string):By;
+
+   /**
+    * Specifies the id of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param id the id value.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   id(id:number):By;
+
+   /**
+    * Specifies the type of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param tp the type value.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   type(tp:string):By;
+
+   /**
+    * Specifies the clickable status of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param b the clickable status,default to true.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   clickable(b?:bool):By;
+
+   /**
+    * Specifies the scrollable status of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param b the scrollable status,default to true.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   scrollable(b?:bool):By;
+
+   /**
+    * Specifies the enabled status of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param b the enabled status,default to true.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   enabled(b?:bool):By;
+
+   /**
+    * Specifies the focused status of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param b the focused status,default to true.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   focused(b?:bool):By;
+
+   /**
+    * Specifies the selected status of the target UiComponent.
+    * @syscap SystemCapability.Test.UiTest
+    * @param b the selected status,default to true.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   selected(b?:bool):By;
+
+   /**
+    * Requires that the target UiComponent which is before another UiComponent that specified by the given {@link By}
+    * object,used to locate UiComponent relatively.
+    * @syscap SystemCapability.Test.UiTest
+    * @param by describes the attribute requirements of UiComponent which the target one is in front of.
+    * @return Returns this {@link By} object.
+    * @since 8
+    * @test
+    */
+   isBefore(by:By):By;
+
+    /**
+     * Requires that the target UiComponent which is after another UiComponent that specified by the given {@link By}
+     * object,used to locate UiComponent relatively.
+     * @syscap SystemCapability.Test.UiTest
+     * @param by describes the attribute requirements of UiComponent which the target one is in back of.
+     * @return Returns this {@link By} object.
+     * @since 8
+     * @test
+     */
+    isAfter(by:By):By;
+    }
+
+    /**
+     * Represents a UiComponent of the ohos application,user can perform operations or query attributes on it.
+     *
+     * @since 8
+     * @test
+     * @syscap SystemCapability.Test.UiTest
+     */
+     class UiComponent{
+      /**
+       * Click this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @since 8
+       * @test
+       */
+      click():Promise<void>;
+
+      /**
+       * Double click this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @since 8
+       * @test
+       */
+      doubleClick():Promise<void>;
+
+      /**
+       * Long click this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @since 8
+       * @test
+       */
+      longClick():Promise<void>;
+
+      /**
+       * Get the id attribute value.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the id value.
+       * @since 8
+       * @test
+       */
+      getId():Promise<number>;
+
+      /**
+       * Get the inspectorKey attribute value.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the inspectorKey value.
+       * @since 8
+       * @test
+       */
+      getKey():Promise<string>;
+
+      /**
+       * Get the text attribute value.
+       * @syscap SystemCapability.Test.UiTest
+       * @devices phone,tablet,tv,wearable,car
+       * @since 8
+       * @test
+       */
+      getText():Promise<string>;
+
+      /**
+       * Get the type name.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the type name.
+       * @since 8
+       * @test
+       */
+      getType():Promise<string>;
+
+      /**
+       * Get the clickable status of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the clickable status.
+       * @since 8
+       * @test
+       */
+      isClickable():Promise<bool>;
+
+      /**
+       * Get the scrollable status of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the scrollable status.
+       * @since 8
+       * @test
+       */
+      isScrollable():Promise<bool>;
+
+      /**
+       * Get the enabled status of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the enabled status.
+       * @since 8
+       * @test
+       */
+      isEnabled():Promise<bool>;
+
+      /**
+       * Get the focused status of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the focused status.
+       * @since 8
+       * @test
+       */
+      isFocused():Promise<bool>;
+
+      /**
+       * Get the selected status of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @returns the selected status.
+       * @since 8
+       * @test
+       */
+      isSelected():Promise<bool>;
+
+      /**
+       * Inject text to this {@link UiComponent},applicable to TextInput.
+       * @syscap SystemCapability.Test.UiTest
+       * @param text the text to inject.
+       * @since 8
+       * @test
+       */
+      inputText(text: string):Promise<void>;
+
+      /**
+       * Scroll on this {@link UiComponent}to find matched {@link UiComponent},applicable to scrollable one.
+       * @syscap SystemCapability.Test.UiTest
+       * @param by the attribute requirements of the target {@link UiComponent}.
+       * @return the found result,or undefined if not found.
+       * @since 8
+       * @test
+       */
+      scrollSearch(by:By):Promise<UiComponent>;
+}
+
+/**
+ * The unified facade of UiTest framework,can be used to find {@link UiComponent},trigger keyEvents,perform
+ * coordinates-based UI actions,capture screen and so on.
+ *
+ * @since 8
+ * @test
+ * @syscap SystemCapability.Test.UiTest
+ */
+ class UiDriver{
+  /**
+   * Create an {@link UiDriver} object.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the {@link UiDriver} object.
+   * @since 8
+   * @test
+   */
+  static create():UiDriver;
+
+  /**
+   * Delay with specified duration.
+   * @syscap SystemCapability.Test.UiTest
+   * @param duration the delay duration in milliseconds.
+   * @since 8
+   * @test
+   */
+  delayMs(duration:number):Promise<void>;
+
+  /**
+   * Find the first matched {@link UiComponent} on current UI.
+   * @syscap SystemCapability.Test.UiTest
+   * @param by the attribute requirements of the target {@link UiComponent}.
+   * @returns the first matched {@link UiComponent} or undefined.
+   * @since 8
+   * @test
+   */
+  findComponent(by:By):Promise<UiComponent>;
+
+  /**
+   * Find all the matched {@link UiComponent}s on current UI.
+   * @syscap SystemCapability.Test.UiTest
+   * @param by the attribute requirements of the target {@link UiComponent}.
+   * @returns the matched {@link UiComponent}s list.
+   * @since 8
+   * @test
+   */
+  findComponents(by:By):Promise<Array<UiComponent>>;
+
+  /**
+   * Assert t the matched {@link UiComponent}s exists on current UI;if not,assertError will be raised.
+   * @syscap SystemCapability.Test.UiTest
+   * @param by the attribute requirements of the target {@link UiComponent}.
+   * @throws Throws this exception if following error occurs:{@code ComponentExistAssertion Failure}.
+   * @since 8
+   * @test
+   */
+  assertComponentExist(by:By):Promise<void>;
+
+  /**
+   * Press the BACK key.
+   * @syscap SystemCapability.Test.UiTest
+   * @since 8
+   * @test
+   */
+  pressBack():Promise<void>;
+
+  /**
+   * Press the specified key.
+   * @syscap SystemCapability.Test.UiTest
+   * @param keyCode the target keyCode.
+   * @since 8
+   * @test
+   */
+  triggerKey(keyCode:number):Promise<void>;
+
+  /**
+   * Click on the specified location on the screen.
+   * @syscap SystemCapability.Test.UiTest
+   * @param x the x-coordinate.
+   * @param y the y-coordinate.
+   * @since 8
+   * @test
+   */
+  click(x:number,y:number):Promise<void>;
+
+  /**
+   * DoubleClick on the specified location on the screen.
+   * @syscap SystemCapability.Test.UiTest
+   * @param x the x-coordinate.
+   * @param y the y-coordinate.
+   * @since 8
+   * @test
+   */
+  doubleClick(x:number,y:number):Promise<void>;
+
+  /**
+   * LongClick on the specified location on the screen.
+   * @syscap SystemCapability.Test.UiTest
+   * @param x the x-coordinate.
+   * @param y the y-coordinate.
+   * @since 8
+   * @test
+   */
+  longClick(x:number,y:number):Promise<void>;
+
+  /**
+   * Swipe on the screen between the specified points.
+   * @syscap SystemCapability.Test.UiTest
+   * @param startx the x-coordinate of the starting point.
+   * @param starty the y-coordinate of the starting point.
+   * @param endx the x-coordinate of the ending point.
+   * @param endy the y-coordinate of the ending point.
+   * @since 8
+   * @test
+   */
+  swipe(startx:number,starty:number,endx:number,endy:number):Promise<void>;
+
+  /**
+   * Capture current screen and save as picture which PNG format.
+   * @syscap SystemCapability.Test.UiTest
+   * @param savePath the path where to store the picture.
+   * @returns true if screen-capturing and file-storing are completed successfully,false otherwise.
+   * @since 8
+   * @test
+   */
+  screenCap(savePath:string):Promise<bool>;
+}
+
+/**
+ * The static builder for building {@link By}object conveniently,usage example:BY.text('txt').enabled(true).
+ * @syscap SystemCapability.Test.UiTest
+ * @since 8
+ * @test
+ */
+ const BY:By;
+
+ export {UiComponent,UiDriver,BY};
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