diff --git a/Ink Canvas/MainWindow_cs/MW_PPT.cs b/Ink Canvas/MainWindow_cs/MW_PPT.cs
index 1cfdd349..10d40c0e 100644
--- a/Ink Canvas/MainWindow_cs/MW_PPT.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_PPT.cs	
@@ -983,5 +983,51 @@ namespace Ink_Canvas {
         private void ImagePPTControlEnd_MouseUp(object sender, MouseButtonEventArgs e) {
             BtnPPTSlideShowEnd_Click(BtnPPTSlideShowEnd, null);
         }
+
+        // 检查并安全关闭多余的WPS进程（仅当所有WPS都未打开PPT时）
+        private static void CloseExtraWpsProcessesIfNoPptOpen()
+        {
+            try
+            {
+                var wpsProcesses = System.Diagnostics.Process.GetProcessesByName("wpp");
+                if (wpsProcesses.Length == 0) return;
+
+                bool anyWpsHasPpt = false;
+
+                foreach (var proc in wpsProcesses)
+                {
+                    try
+                    {
+                        // 通过窗口标题判断是否有PPT文档（WPS窗口标题通常包含文档名）
+                        if (!string.IsNullOrEmpty(proc.MainWindowTitle) && proc.MainWindowTitle.Contains(".ppt"))
+                        {
+                            anyWpsHasPpt = true;
+                            break;
+                        }
+                    }
+                    catch { }
+                }
+
+                // 如果没有任何WPS打开PPT，则关闭所有WPS进程
+                if (!anyWpsHasPpt)
+                {
+                    foreach (var proc in wpsProcesses)
+                    {
+                        try
+                        {
+                            if (!proc.CloseMainWindow())
+                            {
+                                proc.Kill();
+                            }
+                        }
+                        catch { }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                System.Windows.MessageBox.Show("关闭多余WPS进程时出错：" + ex.Message);
+            }
+        }
     }
 }