diff --git a/DownKyi.Core/Settings/Models/BasicSettings.cs b/DownKyi.Core/Settings/Models/BasicSettings.cs
index 2089888..21fde70 100644
--- a/DownKyi.Core/Settings/Models/BasicSettings.cs
+++ b/DownKyi.Core/Settings/Models/BasicSettings.cs
@@ -12,4 +12,5 @@ public class BasicSettings
     public AllowStatus IsAutoDownloadAll { get; set; } = AllowStatus.NONE;
     public DownloadFinishedSort DownloadFinishedSort { get; set; } = DownloadFinishedSort.NOT_SET;
     public RepeatDownloadStrategy RepeatDownloadStrategy { get; set; } = RepeatDownloadStrategy.Ask;
+    public bool RepeatFileAutoAddNumberSuffix { get; set; } = false;
 }
\ No newline at end of file
diff --git a/DownKyi.Core/Settings/SettingsManager.Basic.cs b/DownKyi.Core/Settings/SettingsManager.Basic.cs
index d6de598..ca57569 100644
--- a/DownKyi.Core/Settings/SettingsManager.Basic.cs
+++ b/DownKyi.Core/Settings/SettingsManager.Basic.cs
@@ -19,10 +19,13 @@ public partial class SettingsManager
 
     // 下载完成列表排序
     private readonly DownloadFinishedSort _finishedSort = DownloadFinishedSort.DOWNLOAD;
-    
+
     // 重复下载策略
     private readonly RepeatDownloadStrategy _repeatDownloadStrategy = RepeatDownloadStrategy.Ask;
 
+    // 重复文件自动添加数字后缀
+    private readonly bool _repeatFileAutoAddNumberSuffix = false;
+
     /// <summary>
     /// 获取下载完成后的操作
     /// </summary>
@@ -190,7 +193,7 @@ public partial class SettingsManager
         appSettings.Basic.DownloadFinishedSort = finishedSort;
         return SetSettings();
     }
-    
+
     /// <summary>
     /// 获取重复下载策略
     /// </summary>
@@ -218,4 +221,33 @@ public partial class SettingsManager
         appSettings.Basic.RepeatDownloadStrategy = repeatDownloadStrategy;
         return SetSettings();
     }
+
+    /// <summary>
+    /// 重复文件自动添加数字后缀
+    /// </summary>
+    /// <returns></returns>
+    public bool IsRepeatFileAutoAddNumberSuffix()
+    {
+        appSettings = GetSettings();
+        if (appSettings.Basic.RepeatFileAutoAddNumberSuffix == false)
+        {
+            // 第一次获取，先设置默认值
+            IsRepeatFileAutoAddNumberSuffix(_repeatFileAutoAddNumberSuffix);
+            return _repeatFileAutoAddNumberSuffix;
+        }
+
+        return appSettings.Basic.RepeatFileAutoAddNumberSuffix;
+    }
+
+    /// <summary>
+    /// 设置重复文件自动添加数字后缀
+    /// </summary>
+    /// <param name="repeatFileAutoAddNumberSuffix"></param>
+    /// <returns></returns>
+    /// <exception cref="NotImplementedException"></exception>
+    public bool IsRepeatFileAutoAddNumberSuffix(bool repeatFileAutoAddNumberSuffix)
+    {
+        appSettings.Basic.RepeatFileAutoAddNumberSuffix = repeatFileAutoAddNumberSuffix;
+        return SetSettings();
+    }
 }
\ No newline at end of file
diff --git a/DownKyi.Core/Utils/Format.cs b/DownKyi.Core/Utils/Format.cs
index dacf6f3..76cfae6 100644
--- a/DownKyi.Core/Utils/Format.cs
+++ b/DownKyi.Core/Utils/Format.cs
@@ -211,6 +211,6 @@ public static class Format
         destName = destName.Trim('.');
 
         // 如果只有空白字符、dot符
-        return destName is "" or "." ? "[empty title]" : destName;
+        return destName is " " or "." ? "[empty title]" : destName;
     }
 }
\ No newline at end of file
diff --git a/DownKyi/Languanges/Default.axaml b/DownKyi/Languanges/Default.axaml
index 298a6a1..16cf372 100644
--- a/DownKyi/Languanges/Default.axaml
+++ b/DownKyi/Languanges/Default.axaml
@@ -183,6 +183,7 @@
     <system:String x:Key="RepeatDownloadAsk">每次询问</system:String>
     <system:String x:Key="RepeatDownloadReDownload">重新下载</system:String>
     <system:String x:Key="RepeatDownloadReJumpOver">跳过重复项</system:String>
+    <system:String x:Key="RepeatFileAutoAddNumberSuffix">重复文件自动添加数字序号后缀</system:String>
     <system:String x:Key="AutoDownloadAll">解析后自动下载已解析视频</system:String>
     <system:String x:Key="Network">网络</system:String>
     <system:String x:Key="UseSSL">启用https（若下载器提示SSL错误，则关闭此项）</system:String>
diff --git a/DownKyi/Services/Download/AddToDownloadService.cs b/DownKyi/Services/Download/AddToDownloadService.cs
index 27c41d4..6042a4f 100644
--- a/DownKyi/Services/Download/AddToDownloadService.cs
+++ b/DownKyi/Services/Download/AddToDownloadService.cs
@@ -445,6 +445,27 @@ public class AddToDownloadService
                 // 合成绝对路径
                 var filePath = Path.Combine(directory, fileName.RelativePath());
 
+                if (SettingsManager.GetInstance().IsRepeatFileAutoAddNumberSuffix())
+                {
+                    // 如果存在同名文件，自动重命名
+                    // todo 如果重新下载呢。还没想好
+                    var directoryName = Path.GetDirectoryName(filePath);
+                    var files = Directory.GetFiles(directoryName).Select(Path.GetFileNameWithoutExtension).Distinct().ToList();
+
+                    if (files.Contains(Path.GetFileNameWithoutExtension(filePath)))
+                    {
+                        var count = 1;
+                        var newFilePath = filePath;
+                        while (files.Contains(Path.GetFileNameWithoutExtension(newFilePath)))
+                        {
+                            newFilePath = Path.Combine(directory, $"{fileName.RelativePath()}({count})");
+                            count++;
+                        }
+
+                        filePath = newFilePath;
+                    }
+                }
+
                 // 视频类别
                 PlayStreamType playStreamType;
                 switch (_videoInfoView.TypeId)
diff --git a/DownKyi/ViewModels/Settings/ViewBasicViewModel.cs b/DownKyi/ViewModels/Settings/ViewBasicViewModel.cs
index 39927c2..ea92018 100644
--- a/DownKyi/ViewModels/Settings/ViewBasicViewModel.cs
+++ b/DownKyi/ViewModels/Settings/ViewBasicViewModel.cs
@@ -81,6 +81,14 @@ public class ViewBasicViewModel : ViewModelBase
         get => _autoDownloadAll;
         set => SetProperty(ref _autoDownloadAll, value);
     }
+    
+    private bool _repeatFileAutoAddNumberSuffix;
+
+    public bool RepeatFileAutoAddNumberSuffix
+    {
+        get => _repeatFileAutoAddNumberSuffix;
+        set => SetProperty(ref _repeatFileAutoAddNumberSuffix, value);
+    }
 
     private List<RepeatDownloadStrategyDisplay> _repeatDownloadStrategy;
 
@@ -260,13 +268,23 @@ public class ViewBasicViewModel : ViewModelBase
         PublishTip(isSucceed);
     }
 
-    // 解析范围事件
+    private DelegateCommand? _repeatFileAutoAddNumberSuffixCommand;
+    
+    public DelegateCommand RepeatFileAutoAddNumberSuffixCommand => _repeatFileAutoAddNumberSuffixCommand ??= new DelegateCommand(ExecuteRepeatFileAutoAddNumberSuffixCommand);
+    
+    private void ExecuteRepeatFileAutoAddNumberSuffixCommand()
+    {
+        var isSucceed = SettingsManager.GetInstance().IsRepeatFileAutoAddNumberSuffix(RepeatFileAutoAddNumberSuffix);
+        PublishTip(isSucceed);
+    }
+
+    // 重复下载策略事件
     private DelegateCommand<object>? _repeatDownloadStrategyCommand;
 
     public DelegateCommand<object> RepeatDownloadStrategyCommand => _repeatDownloadStrategyCommand ??= new DelegateCommand<object>(ExecuteRepeatDownloadStrategyCommand);
 
     /// <summary>
-    /// 解析范围事件
+    /// 重复下载策略事件
     /// </summary>
     /// <param name="parameter"></param>
     private void ExecuteRepeatDownloadStrategyCommand(object parameter)
diff --git a/DownKyi/Views/Settings/ViewBasic.axaml b/DownKyi/Views/Settings/ViewBasic.axaml
index e9458be..cdf3773 100644
--- a/DownKyi/Views/Settings/ViewBasic.axaml
+++ b/DownKyi/Views/Settings/ViewBasic.axaml
@@ -129,6 +129,15 @@
 
                 </ComboBox>
             </StackPanel>
+            <CheckBox
+                Margin="0,20,0,0"
+                HorizontalAlignment="Left"
+                VerticalAlignment="Top"
+                Command="{Binding RepeatFileAutoAddNumberSuffixCommand}"
+                Content="{DynamicResource RepeatFileAutoAddNumberSuffix}"
+                Foreground="{DynamicResource BrushTextDark}"
+                IsChecked="{Binding RepeatFileAutoAddNumberSuffix, Mode=TwoWay}"
+                Theme="{StaticResource CheckBoxStyle}" />
             <StackPanel Margin="10" />
         </StackPanel>
     </ScrollViewer>