diff --git a/VPet-Simulator.Windows/App.xaml.cs b/VPet-Simulator.Windows/App.xaml.cs
index d233cbc..5e6cef0 100644
--- a/VPet-Simulator.Windows/App.xaml.cs
+++ b/VPet-Simulator.Windows/App.xaml.cs
@@ -34,6 +34,10 @@ namespace VPet_Simulator.Windows
         {
             Args = e.Args;
 
+            //旧版本多开bug修复
+            if (File.Exists(ExtensionValue.BaseDirectory + @"\Setting-.lps"))
+                File.Delete(ExtensionValue.BaseDirectory + @"\Setting-.lps");
+
             foreach (var mss in new DirectoryInfo(ExtensionValue.BaseDirectory).GetFiles("Setting*.lps"))
             {
                 var n = mss.Name.Substring(7).Trim('-');
diff --git a/VPet-Simulator.Windows/MainWindow.cs b/VPet-Simulator.Windows/MainWindow.cs
index b5ed960..9563c5c 100644
--- a/VPet-Simulator.Windows/MainWindow.cs
+++ b/VPet-Simulator.Windows/MainWindow.cs
@@ -235,6 +235,10 @@ namespace VPet_Simulator.Windows
                     //timecount = DateTime.Now;
                 }
                 Set.StartRecordLastPoint = new Point(Dispatcher.Invoke(() => Left), Dispatcher.Invoke(() => Top));
+                if (PrefixSave == "")
+                {//对于主设置的备份
+                    File.Move(ExtensionValue.BaseDirectory + @"\Setting.lps", ExtensionValue.BaseDirectory + @"\Setting.bkp");
+                }
                 File.WriteAllText(ExtensionValue.BaseDirectory + @$"\Setting{PrefixSave}.lps", Set.ToString());
 
                 if (!Directory.Exists(ExtensionValue.BaseDirectory + @"\Saves"))
@@ -1259,6 +1263,10 @@ namespace VPet_Simulator.Windows
                 {
                     Set = new Setting(this, File.ReadAllText(ExtensionValue.BaseDirectory + @$"\Setting{PrefixSave}.lps"));
                 }
+                else if (PrefixSave == "" && File.Exists(ExtensionValue.BaseDirectory + @"\Setting.lps"))
+                {
+                    Set = new Setting(this, File.ReadAllText(ExtensionValue.BaseDirectory + @"\Setting.lps"));
+                }
                 else
                     Set = new Setting(this, "Setting#VPET:|\n");