diff --git a/Ink Canvas/MainWindow_cs/MW_PPT.cs b/Ink Canvas/MainWindow_cs/MW_PPT.cs
index 1cfdd349..dca275f9 100644
--- a/Ink Canvas/MainWindow_cs/MW_PPT.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_PPT.cs	
@@ -1,6 +1,7 @@
 using Ink_Canvas.Helpers;
 using Microsoft.Office.Interop.PowerPoint;
 using System;
+using System.Diagnostics;
 using System.IO;
 using System.Runtime.InteropServices;
 using System.Threading;
@@ -20,6 +21,9 @@ using Microsoft.Office.Core;
 
 namespace Ink_Canvas {
     public partial class MainWindow : Window {
+        [DllImport("user32.dll")]
+        private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
+
         public static Microsoft.Office.Interop.PowerPoint.Application pptApplication = null;
         public static Presentation presentation = null;
         public static Slides slides = null;
@@ -81,6 +85,11 @@ namespace Ink_Canvas {
         public static bool IsShowingRestoreHiddenSlidesWindow = false;
         private static bool IsShowingAutoplaySlidesWindow = false;
 
+        // WPS 相关变量
+        private static bool autoCloseWPS = false;
+        private static Process wpsProcess = null;
+        private static bool hasWpsProcessID = false;
+
 
         private void TimerCheckPPT_Elapsed(object sender, ElapsedEventArgs e) {
             if (IsShowingRestoreHiddenSlidesWindow || IsShowingAutoplaySlidesWindow) return;
@@ -541,6 +550,15 @@ namespace Ink_Canvas {
             try {
                 if (isFloatingBarFolded) await UnFoldFloatingBar(new object());
 
+                // 对于延迟未关闭的 WPP，先记录进程 ID，待所有结束事件处理完毕后强制关闭
+                if (autoCloseWPS && pptApplication != null && pptApplication.Path.Contains("Kingsoft\\WPS Office\\") && pptApplication.Presentations.Count <= 1)
+                {
+                    uint processId;
+                    GetWindowThreadProcessId((IntPtr)pptApplication.HWND, out processId);
+                    wpsProcess = Process.GetProcessById((int)processId);
+                    hasWpsProcessID = true;
+                }
+
                 LogHelper.WriteLogToFile(string.Format("PowerPoint Slide Show End"), LogHelper.LogType.Event);
                 if (isEnteredSlideShowEndEvent) {
                     LogHelper.WriteLogToFile("Detected previous entrance, returning");