diff --git a/api/@ohos.commonEvent.d.ts b/api/@ohos.commonEvent.d.ts
index c3dc0d5b8f9cb41a02e9375c8097a16ba97aedca..13e0e044698ce518235ebc036c5ce87817176a0d 100644
--- a/api/@ohos.commonEvent.d.ts
+++ b/api/@ohos.commonEvent.d.ts
@@ -298,6 +298,11 @@ declare namespace commonEvent {
      */
     COMMON_EVENT_HOME_MODE = "common.event.HOME_MODE",
 
+    /**
+     * sent by the window manager service when the window mode is split.
+     */
+    COMMON_EVENT_SPLIT_SCREEN = "common.event.SPLIT_SCREEN",
+
     /**
      * sent by the smart function when the system in office mode.
      */