diff --git a/api/@ohos.app.ability.StartOptions.d.ts b/api/@ohos.app.ability.StartOptions.d.ts
index 4dafb4fe684f3f3cf96459c59717532af536dcf2..66f97cd5e16089239a46b70b8ffd483b2a87e7b6 100644
--- a/api/@ohos.app.ability.StartOptions.d.ts
+++ b/api/@ohos.app.ability.StartOptions.d.ts
@@ -224,4 +224,14 @@ export default class StartOptions {
    * @since 17
    */
   maxWindowHeight?: number;
+
+  /**
+   * Whether to hide start window when launching ability from the same bundle.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @stagemodelonly
+   * @since 20
+   */
+  hideStartWindow?: boolean;
 }
\ No newline at end of file