diff --git a/api/@ohos.uitest.d.ts b/api/@ohos.uitest.d.ts
index 354d22d738c1e27bcb0748521934a62ba752b84f..52045d42607b429bb57384e1c221d393fdb1141b 100755
--- a/api/@ohos.uitest.d.ts
+++ b/api/@ohos.uitest.d.ts
@@ -13,6 +13,21 @@
  * limitations under the License.
  */
 
+/**
+ * Resize dircetion for the window.
+ *
+ * @since 9
+ */
+ enum ResizeDirection{
+   LEFT,
+   RIGHT,  
+   UP,
+   DOWN,
+   LEFT_UP,
+   LEFT_DOWN,
+   RIGHT_UP,
+   RIGHT_DOWN
+ }
 /**
  * Enumerates the string value match pattern.
  *
@@ -49,6 +64,28 @@
    ENDS_WITH = 3
 }
 
+/**
+ * Describes the window mode of the tested window
+ *
+ * @since 9
+ */
+ enum WindowMode{
+    FULLSCREEN,
+    PRIMARY,
+    SECONDARY,
+    FLOATING
+ }
+ 
+/**
+ * Represents the point on the device screen.
+ *
+ * @since 9
+ */
+declare interface Point {
+    readonly  X: number;
+    readonly  Y: number;
+}
+
 /**
  * Represents the rectangle area on the device screen.
  *
@@ -61,6 +98,18 @@ declare interface Rect {
     readonly  bottomY: number;
 }
 
+/**
+ * Represents filer condation to get the window .
+ *
+ * @since 9
+ */
+declare interface WindowFilter {
+    readonly  bundleNmae?: string;
+    readonly  title?: string;
+    readonly  focused?: bool;
+    readonly  actived?: bool;
+}
+
 /**
  * Describes the attribute requirements for the target UiComponents.
  *
@@ -212,14 +261,14 @@ declare interface Rect {
     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{
+/**
+ * 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
@@ -371,18 +420,20 @@ declare interface Rect {
       /**
        * Scroll on this {@link UiComponent} to the top,applicable to scrollable one.
        * @syscap SystemCapability.Test.UiTest
+       * @param speed the speed of swipe (pixels per second),default is 600,the value ranges from 0 to 3000,set it 3000 if greater than 3000.
        * @since 9
        * @test
        */
-      scrollToTop(): Promise<void>;
+      scrollToTop(speed?: number): Promise<void>;
 
       /**
        * Scroll on this {@link UiComponent} to the bottom,applicable to scrollable one.
        * @syscap SystemCapability.Test.UiTest
+       * @param speed the speed of swipe (pixels per second),default is 600,the value ranges from 0 to 3000,set it 3000 if greater than 3000.
        * @since 9
        * @test
        */
-      scrollToBottom(): Promise<void>;
+      scrollToBottom(speed?: number): Promise<void>;
 
       /**
        * Scroll on this {@link UiComponent}to find matched {@link UiComponent},applicable to scrollable one.
@@ -403,6 +454,15 @@ declare interface Rect {
        */
       getBounds(): Promise<Rect>;
 
+      /**
+       * Get the boundsCenter of this {@link UiComponent}.
+       * @syscap SystemCapability.Test.UiTest
+       * @return the boundsCenter object.
+       * @since 9
+       * @test
+       */
+      getBoundsCenter(): Promise<Point>;
+
       /**
        * Drag this {@link UiComponent} to the bounds rect of target UiComponent.
        * @syscap SystemCapability.Test.UiTest
@@ -450,6 +510,16 @@ declare interface Rect {
    */
   findComponent(by:By):Promise<UiComponent>;
 
+  /**
+   * Find the first matched {@link UiWindow} window.
+   * @syscap SystemCapability.Test.UiTest
+   * @param filter the filer condation of the target {@link UiWindow}.
+   * @returns the first matched {@link UiWindow} or undefined.
+   * @since 9
+   * @test
+   */
+  findWindow(filter:WindowFilter):Promise<UiWindow>;
+
   /**
    * Find the first matched {@link UiComponent} on current UI during the time given.
    * @syscap SystemCapability.Test.UiTest
@@ -535,10 +605,11 @@ declare interface Rect {
    * @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.
+   * @param speed the speed of swipe (pixels per second),default is 600,the value ranges from 0 to 3000,set it 3000 if greater than 3000.
    * @since 8
    * @test
    */
-  swipe(startx:number,starty:number,endx:number,endy:number):Promise<void>;
+  swipe(startx:number,starty:number,endx:number,endy:number, speed?: number):Promise<void>;
 
 /**
    * Drag on the screen between the specified points.
@@ -547,10 +618,11 @@ declare interface Rect {
    * @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.
+   * @param speed the speed of swipe (pixels per second),default is 600,the value ranges from 0 to 3000,set it 3000 if greater than 3000.
    * @since 9
    * @test
    */
-  drag(startx: number, starty: number, endx: number, endy: number): Promise<void>;
+  drag(startx: number, starty: number, endx: number, endy: number, speed?: number): Promise<void>;
 
   /**
    * Capture current screen and save as picture which PNG format.
@@ -563,6 +635,141 @@ declare interface Rect {
   screenCap(savePath:string):Promise<bool>;
 }
 
+/**
+ * 
+ *
+ * @since 9
+ * @test
+ * @syscap SystemCapability.Test.UiTest
+ */
+ class UiWindow{
+  /**
+   * Get the bundle name of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the bundle name.
+   * @since 9
+   * @test
+   */
+   getBundleName():Promise<string>;
+
+  /**
+   * Get the bounds rect of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @return the bounds rect object.
+   * @since 9
+   * @test
+   */
+   getBounds():Promise<Rect>;
+   
+  /**
+   * Get the title of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the title value.
+   * @since 9
+   * @test
+   */
+   getTitle():Promise<string>;
+ 
+  /**
+   * Get the windoe mode of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the {@link WindowMode} object.
+   * @since 9
+   * @test
+   */
+   getWindowMode():Promise<WindowMode>;
+
+  /**
+   * Get the focused status of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the focused status
+   * @since 9
+   * @test
+   */
+   isFocused():Promise<bool>;
+
+  /**
+   * Get the actived status of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the actived status
+   * @since 9
+   * @test
+   */
+   isActived():Promise<bool>;
+
+  /**
+   * Set the focused status of this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of focus action
+   * @since 9
+   * @test
+   */
+   focus():Promise<bool>;
+
+  /**
+   * Move this {@link UiWindow} to the specified points.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of move action
+   * @since 9
+   * @test
+   */
+   moveTo(x: number, y: number,):Promise<bool>;
+
+  /**
+   * Resize this {@link UiWindow} to the specified size for the specified direction.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of resize action
+   * @since 9
+   * @test
+   */
+   resize(wide: number, height: number, direction: ResizeDirection):Promise<bool>;
+
+  /**
+   * Change this {@link UiWindow} into split screen mode.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of split action
+   * @since 9
+   * @test
+   */
+   split():Promise<bool>;   
+
+  /**
+   * Maximize this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of maximize action
+   * @since 9
+   * @test
+   */
+   maximize():Promise<bool>;
+
+  /**
+   * Minimize this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of minimize action
+   * @since 9
+   * @test
+   */
+   minimize():Promise<bool>;
+
+  /**
+   * Resume this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of resume action
+   * @since 9
+   * @test
+   */
+   resume():Promise<bool>; 
+
+  /**
+   * Close this {@link UiWindow}.
+   * @syscap SystemCapability.Test.UiTest
+   * @returns the result of close action
+   * @since 9
+   * @test
+   */
+   close():Promise<bool>; 
+ }
+
 /**
  * The static builder for building {@link By}object conveniently,usage example:BY.text('txt').enabled(true).
  * @syscap SystemCapability.Test.UiTest