diff --git a/lib/main.dart b/lib/main.dart
index b9c417dc2..5e2e04995 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -66,9 +66,14 @@ void main() async {
     await windowManager.ensureInitialized();
     bool isLowResolution = await Utils.isLowResolution();
     WindowOptions windowOptions = WindowOptions(
-      size: isLowResolution ? const Size(840, 600) : const Size(1280, 860),
-      center: true,
       skipTaskbar: false,
+      minimumSize: const Size(320, 270),
+      center: Platform.isWindows ? true : false,
+      size: Platform.isWindows
+        ? isLowResolution
+          ? const Size(840, 600) 
+          : null
+        : null,
       // macOS always hide title bar regardless of showWindowButton setting
       titleBarStyle: (Platform.isMacOS || !showWindowButton)
           ? TitleBarStyle.hidden
diff --git a/lib/utils/utils.dart b/lib/utils/utils.dart
index 91f4ce6e0..e08f04278 100644
--- a/lib/utils/utils.dart
+++ b/lib/utils/utils.dart
@@ -21,6 +21,8 @@ import 'package:flutter_inappwebview_platform_interface/flutter_inappwebview_pla
 class Utils {
   static final Random random = Random();
 
+  static Size? _previousWindowSize;
+
   static bool? _isDocumentStartScriptSupported;
 
   /// 检查 Android WebView 是否支持 DOCUMENT_START_SCRIPT 特性
@@ -495,16 +497,18 @@ class Utils {
 
   // 进入桌面设备小窗模式
   static Future<void> enterDesktopPIPWindow() async {
+    _previousWindowSize = await windowManager.getSize();
     await windowManager.setAlwaysOnTop(true);
+    await windowManager.setAspectRatio(16 / 9);
     await windowManager.setSize(const Size(480, 270));
   }
 
   // 退出桌面设备小窗模式
   static Future<void> exitDesktopPIPWindow() async {
-    bool isLowResolution = await Utils.isLowResolution();
     await windowManager.setAlwaysOnTop(false);
-    await windowManager.setSize(
-        isLowResolution ? const Size(800, 600) : const Size(1280, 860));
+    await windowManager.setSize(_previousWindowSize!);
+    _previousWindowSize = null;
+    await windowManager.setAspectRatio(0);
     await windowManager.center();
   }
 
diff --git a/macos/Runner/AppDelegate.swift b/macos/Runner/AppDelegate.swift
index ab6a64d74..e767ff1f4 100644
--- a/macos/Runner/AppDelegate.swift
+++ b/macos/Runner/AppDelegate.swift
@@ -130,7 +130,7 @@ class AppDelegate: FlutterAppDelegate {
     }
     
     @objc func openWithAVPlayer () {
-        let window = NSWindow(contentRect: NSRect(x: 0, y: 0, width: 1280, height: 860),
+        let window = NSWindow(contentRect: NSRect(x: 0, y: 0, width: 1280, height: 720),
                               styleMask: [.titled, .closable, .resizable],
                               backing: .buffered, defer: false)
         window.center()