diff --git a/arkui/ace_engine/native/ui_input_event.h b/arkui/ace_engine/native/ui_input_event.h
index 975d84df1a8b296d090d1cabea596faba1b5a1de..aa858ba65727c4ad075d0790190ab1ade6263395 100644
--- a/arkui/ace_engine/native/ui_input_event.h
+++ b/arkui/ace_engine/native/ui_input_event.h
@@ -61,6 +61,12 @@ typedef enum {
     ARKUI_UIINPUTEVENT_TYPE_AXIS = 2,
     /** Mouse event. */
     ARKUI_UIINPUTEVENT_TYPE_MOUSE = 3,
+    /** 
+     * @brief key event.
+     * 
+     * @since 20
+     */
+    ARKUI_UIINPUTEVENT_TYPE_KEY = 4,
 } ArkUI_UIInputEvent_Type;
 
 /**