diff --git a/api/@ohos.app.form.FormExtensionAbility.d.ts b/api/@ohos.app.form.FormExtensionAbility.d.ts
index f106f0c109bdec3c311236b84e249dbbf4de4c99..64bcd8ca3fdfcc1b361077b272186f267ebde878 100644
--- a/api/@ohos.app.form.FormExtensionAbility.d.ts
+++ b/api/@ohos.app.form.FormExtensionAbility.d.ts
@@ -338,5 +338,18 @@ declare class FormExtensionAbility {
    * @since 20
    */
   onFormLocationChanged(formId: string, newFormLocation: formInfo.FormLocation): void;
+
+  /**
+   * Called to notify the form provider that the size of the form has been changed. Override this method if
+   * you want to know the form size be changed, used for data continuity and layout refresh.
+   *
+   * @param { string } formId - Indicates the ID of the form.
+   * @param { formInfo.FormDimension } newDimension - Indicates the new dimension of the form.
+   * @param { formInfo.Rect } newRect - Indicates the new rect(vp) of the form.
+   * @syscap SystemCapability.Ability.Form
+   * @stagemodelonly
+   * @since 20
+   */
+  onSizeChanged(formId: string, newDimension: formInfo.FormDimension, newRect: formInfo.Rect): void
 }
 export default FormExtensionAbility;
diff --git a/api/@ohos.app.form.formHost.d.ts b/api/@ohos.app.form.formHost.d.ts
index 421eb36c6e8552bfb90b34dc66406e1e7a961906..5db0f7bb26dba6c42d80ea85d8913d8f15f79764 100644
--- a/api/@ohos.app.form.formHost.d.ts
+++ b/api/@ohos.app.form.formHost.d.ts
@@ -1318,5 +1318,23 @@ declare namespace formHost {
    */
   function off(type: 'getLiveFormStatus', 
     callback?: formInfo.GetLiveFormStatusCallback): void;
+
+  /**
+   * Update size of the form.
+   *
+   * @permission ohos.permission.REQUIRE_FORM
+   * @param { string } formId - Indicates the form id.
+   * @param { formInfo.FormDimension } newDimension - The new dimension of the form.
+   * @param { formInfo.Rect } newRect - The new size of the form.
+   * @throws { BusinessError } 201 - Permissions denied.
+   * @throws { BusinessError } 202 - caller is not system app.
+   * @throws { BusinessError } 16501000 - An internal functional error occurred.
+   * @throws { BusinessError } 16501001 - The ID of the form to be operated does not exist.
+   * @throws { BusinessError } 16501012 - The dimension parameter is incorrect
+   * @syscap SystemCapability.Ability.Form
+   * @systemapi
+   * @since 20
+   */
+  function updateFormSize(formId: string, newDimension: formInfo.FormDimension, newRect: formInfo.Rect): void
 }
 export default formHost;
diff --git a/api/@ohos.app.form.formInfo.d.ts b/api/@ohos.app.form.formInfo.d.ts
index f6f9d43c383da0079efb42cb8762910a8a82877c..5c59c1182c3580f3f46b059fca2dcdbd91350a42 100644
--- a/api/@ohos.app.form.formInfo.d.ts
+++ b/api/@ohos.app.form.formInfo.d.ts
@@ -472,6 +472,28 @@ declare namespace formInfo {
      * @since 20
      */
     readonly sceneAnimationParams?: SceneAnimationParams;
+
+    /**
+     * Obtains the resizable of the form.
+     *
+     * @type { ?boolean }
+     * @readonly
+     * @syscap SystemCapability.Ability.Form
+     * @systemapi
+     * @since 20
+     */
+    readonly resizable?: boolean;
+
+    /**
+     * Obtains the group id of the form.
+     *
+     * @type { ?string }
+     * @readonly
+     * @syscap SystemCapability.Ability.Form
+     * @systemapi
+     * @since 20
+     */
+    readonly groupId?: string;
   }
 
   /**