diff --git a/api/@internal/component/ets/slider.d.ts b/api/@internal/component/ets/slider.d.ts
index 2ecd48ceb7959c7b1f8dc3f79c24597fdc8b22f6..481752c275977fe2b27ff1490f23de9b85314342 100644
--- a/api/@internal/component/ets/slider.d.ts
+++ b/api/@internal/component/ets/slider.d.ts
@@ -990,6 +990,50 @@ interface SliderInterface {
   (options?: SliderOptions): SliderAttribute;
 }
 
+/**
+ * Defines the accessibility information of slider step point.
+ *
+ * @interface SliderStepItemAccessibility
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @crossplatform
+ * @atomicservice
+ * @since 20
+ */
+declare interface SliderStepItemAccessibility {
+  /**
+   * Set the accessibility of the slider step point.
+   *
+   * @type { ?ResourceStr }
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @atomicservice
+   * @since 20
+   */
+  text?: ResourceStr;
+}
+
+/**
+ * Defines the accessibility information of slider step point.
+ *
+ * @interface SliderShowStepOptions
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @crossplatform
+ * @atomicservice
+ * @since 20
+ */
+declare interface SliderShowStepOptions {
+  /**
+   * Set the accessibility of the slider step points.
+   *
+   * @type { ?Map<number, SliderStepItemAccessibility> }
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @atomicservice
+   * @since 20
+   */
+  stepsAccessibility?: Map<number, SliderStepItemAccessibility>;
+}
+
 /**
  * Defines the options for customizing the accessibility of content within a slider.
  * These options can be used to enhance the user experience for assistive technologies.
@@ -1319,6 +1363,20 @@ declare class SliderAttribute extends CommonMethod<SliderAttribute> {
    */
   showSteps(value: boolean): SliderAttribute;
 
+  /**
+   * Called when setting whether to display step size.
+   *
+   * @param { boolean } value
+   * @param { SliderShowStepOptions } options
+   * @returns { SliderAttribute }
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @form
+   * @atomicservice
+   * @since 20
+   */
+  showSteps(value: boolean, options?: SliderShowStepOptions): SliderAttribute;
+
   /**
    * Called when the percentage of bubble prompt is set when sliding.
    *