diff --git a/api/arkui/component/richEditor.static.d.ets b/api/arkui/component/richEditor.static.d.ets
index d425043dc14738d736442ef6d429d2d369f29f1d..b5df4f83e510afc1231d7ab02dea80071a8ea770 100644
--- a/api/arkui/component/richEditor.static.d.ets
+++ b/api/arkui/component/richEditor.static.d.ets
@@ -136,6 +136,30 @@ export declare enum RichEditorResponseType {
      */
     DEFAULT = 3
 }
+/**
+ * Defines undo style.
+ *
+ * @enum { number }
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @since 20
+ */
+export declare enum UndoStyle {
+  /**
+   * Undo without style.
+   *
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @since 20
+   */
+  CLEAR_STYLE = 0,
+
+  /**
+   * Undo keep style.
+   *
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @since 20
+   */
+  KEEP_STYLE = 1,
+}
 /**
  * Defines the span position.
  *
@@ -2071,7 +2095,7 @@ export declare interface RichEditorAttribute extends CommonMethod {
     /**
      * Define the max length content of the richEditor.
      *
-     * @param { Optional<number> } maxLength - The maximun length content of the richEditor.
+     * @param { number | undefined } maxLength - The maximun length content of the richEditor.
      * @returns { RichEditorAttribute }  returns the instance of the RichEditorAttribute.
      * @syscap SystemCapability.ArkUI.ArkUI.Full
      * @since 20
@@ -2080,7 +2104,7 @@ export declare interface RichEditorAttribute extends CommonMethod {
     /**
      * Define max lines of the richEditor.
      *
-     * @param { Optional<number> } maxLines - The maximun Lines of the richEditor.
+     * @param { number | undefined } maxLines - The maximun Lines of the richEditor.
      * @returns { RichEditorAttribute } returns the instance of the RichEditorAttribute.
      * @syscap SystemCapability.ArkUI.ArkUI.Full
      * @since 20
@@ -2089,7 +2113,7 @@ export declare interface RichEditorAttribute extends CommonMethod {
     /**
      * Set the keyboard appearance.
      *
-     * @param { Optional<KeyboardAppearance> } appearance - Default value is KeyboardAppearance.NONE_IMMERSIVE
+     * @param { KeyboardAppearance | undefined } appearance - Default value is KeyboardAppearance.NONE_IMMERSIVE
      * @returns { RichEditorAttribute } returns the instance of the RichEditorAttribute.
      * @syscap SystemCapability.ArkUI.ArkUI.Full
      * @since 20
@@ -2098,7 +2122,7 @@ export declare interface RichEditorAttribute extends CommonMethod {
     /**
      * Set whether stop backPressed callback event or not.
      *
-     * @param { Optional<boolean> } isStopped - Default value is true, set false to trigger the latest callback event.
+     * @param { boolean | undefined } isStopped - Default value is true, set false to trigger the latest callback event.
      * @returns { RichEditorAttribute } returns the instance of the RichEditorAttribute.
      * @syscap SystemCapability.ArkUI.ArkUI.Full
      * @since 20
@@ -2114,6 +2138,26 @@ export declare interface RichEditorAttribute extends CommonMethod {
      */    
     default attributeModifier(modifier: AttributeModifier<RichEditorAttribute> | AttributeModifier<CommonMethod> |
         undefined): this;
+    /**
+     * Whether to enable automatic spacing between Chinese and Latin characters.
+     *
+     * @param { boolean | undefined } enable - The default value is false, indicates the flag whether to enable
+     *     automatic spacing.
+     * @returns { RichEditorAttribute } returns the instance of the RichEditorAttribute.
+     * @syscap SystemCapability.ArkUI.ArkUI.Full
+     * @since 20
+     */   
+    default enableAutoSpacing(enable: boolean | undefined): this;
+    /**
+     * Set undo style.
+     *
+     * @param { UndoStyle | undefined } style - Default value is UndoStyle.CLEAR_STYLE.
+     *     automatic spacing.
+     * @returns { RichEditorAttribute } returns the instance of the RichEditorAttribute.
+     * @syscap SystemCapability.ArkUI.ArkUI.Full
+     * @since 20
+     */   
+    default undoStyle(style: UndoStyle | undefined): this;
 }
 /**
  * the callback of cut event.