diff --git a/apps/desktop/src-tauri/src/lib.rs b/apps/desktop/src-tauri/src/lib.rs
index 446cc8f..96051d5 100644
--- a/apps/desktop/src-tauri/src/lib.rs
+++ b/apps/desktop/src-tauri/src/lib.rs
@@ -118,6 +118,7 @@ pub fn run() {
                     log::info!(target: "app", "隱藏啟動（開機自動啟動或更新後重啟）：只在系統匣");
                     window::hide_main(app);
                 } else if let Some(window) = app.get_webview_window("main") {
+                    let _ = window.center();
                     let _ = window.show();
                 }
             };
diff --git a/packages/core/src/lib/windows.ts b/packages/core/src/lib/windows.ts
index f79d056..ea37700 100644
--- a/packages/core/src/lib/windows.ts
+++ b/packages/core/src/lib/windows.ts
@@ -26,6 +26,7 @@ export async function openSettings(): Promise<void> {
     title: "TREM-Lite 設定",
     width: 970,
     height: 590,
+    center: true,
     resizable: false,
     decorations: false,
     transparent: !isMac,