diff --git a/api/@ohos.inputMethodEngine.d.ts b/api/@ohos.inputMethodEngine.d.ts
index ba7993665199844c3a3cab797338991e62297a8a..1ad120fd24ba8a1420ea5169d70da868da365302 100644
--- a/api/@ohos.inputMethodEngine.d.ts
+++ b/api/@ohos.inputMethodEngine.d.ts
@@ -577,6 +577,28 @@ declare namespace inputMethodEngine {
      */
     off(type: 'inputStop', callback: () => void): void;
 
+    /**
+     * Subscribe 'inputWillDisconnect'.
+     *
+     * @param { 'inputStop' } type - the type of subscribe event.
+     * @param { Callback<InputDisconnectReason> } callback - the callback of on('inputWillDisconnect').
+     * @syscap SystemCapability.MiscServices.InputMethodFramework
+     * @since 20
+     * @arkts 1.2
+     */
+    on(type: 'inputWillDisconnect', callback: ( reason :InputDisconnectReason) => void): void;
+
+    /**
+     * Unsubscribe 'inputWillDisconnect'.
+     *
+     * @param { 'inputStop' } type - the type of Unsubscribe event.
+     * @param { function } callback - optional,the callback of on('inputWillDisconnect').
+     * @syscap SystemCapability.MiscServices.InputMethodFramework
+     * @since 20
+     * @arkts 1.2
+     */
+    off(type: 'inputWillDisconnect', callback?: ( reason :InputDisconnectReason) => void): void;
+
     /**
      * Subscribe 'setCallingWindow'.
      *
@@ -2829,6 +2851,33 @@ declare namespace inputMethodEngine {
      */
     CHARACTERS
   }
+
+  /**
+   * Enumerates the input disconnect reason.
+   *
+   * @enum { number }
+   * @syscap SystemCapability.MiscServices.InputMethodFramework
+   * @since 20
+   * @arkts 1.2
+   */
+  export enum  InputDisconnectReason {
+  /**
+   * Focus switch.
+   *
+   * @syscap SystemCapability.MiscServices.InputMethodFramework
+   * @since 20
+   * @arkts 1.2
+   */
+    FOCUS_SWITCH = 0,
+  /**
+   * Switch input method.
+   *
+   * @syscap SystemCapability.MiscServices.InputMethodFramework
+   * @since 20
+   * @arkts 1.2
+   */
+    INPUT_METHOD_SWITCH
+  }
 }
 
 export default inputMethodEngine;