diff --git a/src/universal/types/types.d.ts b/src/universal/types/types.d.ts
index 5fd7dd8..3b12140 100644
--- a/src/universal/types/types.d.ts
+++ b/src/universal/types/types.d.ts
@@ -144,7 +144,8 @@ interface IBrowserWindowOptions {
     nodeIntegration: boolean,
     nodeIntegrationInWorker: boolean,
     contextIsolation: boolean,
-    backgroundThrottling: boolean
+    // 不传即沿用 Electron 默认值（true，窗口不可见时降频）；仅在某个窗口确实需要后台全速渲染时才显式关闭。
+    backgroundThrottling?: boolean
     webSecurity?: boolean
   },
   vibrancy?: string | any,