diff --git a/Ink Canvas/Helpers/DlassNoteUploader.cs b/Ink Canvas/Helpers/DlassNoteUploader.cs
index ed08fece..30da0f51 100644
--- a/Ink Canvas/Helpers/DlassNoteUploader.cs	
+++ b/Ink Canvas/Helpers/DlassNoteUploader.cs	
@@ -76,6 +76,16 @@ namespace Ink_Canvas.Helpers
             public List<WhiteboardInfo> Whiteboards { get; set; }
         }
 
+        /// <summary>
+        /// 异步上传笔记文件到Dlass（支持PNG和ICSTK格式）
+        /// </summary>
+        /// <param name="filePath">文件路径（支持PNG和ICSTK）</param>
+        /// <returns>是否上传成功</returns>
+        public static async Task<bool> UploadNoteFileAsync(string filePath)
+        {
+            return await UploadPngNoteAsync(filePath);
+        }
+
         /// <summary>
         /// 异步上传PNG文件到Dlass
         /// </summary>
@@ -98,6 +108,14 @@ namespace Ink_Canvas.Helpers
                     return false;
                 }
 
+                // 检查文件扩展名
+                var fileExtension = Path.GetExtension(pngFilePath).ToLower();
+                if (fileExtension != ".png" && fileExtension != ".icstk")
+                {
+                    LogHelper.WriteLogToFile($"上传失败：不支持的文件格式 - {fileExtension}，仅支持PNG和ICSTK", LogHelper.LogType.Error);
+                    return false;
+                }
+
                 // 检查文件大小（最大10MB）
                 var fileInfo = new FileInfo(pngFilePath);
                 if (fileInfo.Length > 10 * 1024 * 1024)
@@ -160,8 +178,9 @@ namespace Ink_Canvas.Helpers
                     // 准备上传参数
                     var fileName = Path.GetFileNameWithoutExtension(pngFilePath);
                     var title = fileName;
-                    var description = $"自动上传的笔记 - {DateTime.Now:yyyy-MM-dd HH:mm:ss}";
-                    var tags = "自动上传,笔记";
+                    var fileType = fileExtension == ".icstk" ? "墨迹文件" : "笔记";
+                    var description = $"自动上传的{fileType} - {DateTime.Now:yyyy-MM-dd HH:mm:ss}";
+                    var tags = fileExtension == ".icstk" ? "自动上传,墨迹,icstk" : "自动上传,笔记,png";
 
                     // 上传文件
                     var uploadResult = await apiClient.UploadNoteAsync<UploadNoteResponse>(
diff --git a/Ink Canvas/MainWindow_cs/MW_Save&OpenStrokes.cs b/Ink Canvas/MainWindow_cs/MW_Save&OpenStrokes.cs
index bcbc487c..0e3b6f12 100644
--- a/Ink Canvas/MainWindow_cs/MW_Save&OpenStrokes.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_Save&OpenStrokes.cs	
@@ -133,6 +133,23 @@ namespace Ink_Canvas
                     var fs = new FileStream(savePathWithName, FileMode.Create);
                     inkCanvas.Strokes.Save(fs);
                     fs.Close();
+                    _ = Task.Run(async () =>
+                    {
+                        try
+                        {
+                            var delayMinutes = Settings?.Dlass?.AutoUploadDelayMinutes ?? 0;
+                            if (delayMinutes > 0)
+                            {
+                                await Task.Delay(TimeSpan.FromMinutes(delayMinutes));
+                            }
+
+                            await Helpers.DlassNoteUploader.UploadNoteFileAsync(savePathWithName);
+                        }
+                        catch (Exception)
+                        {
+                        }
+                    });
+                    
                     // 保存元素信息
                     var elementInfos = new List<CanvasElementInfo>();
                     foreach (var child in inkCanvas.Children)
@@ -322,7 +339,7 @@ namespace Ink_Canvas
                                 await Task.Delay(TimeSpan.FromMinutes(delayMinutes));
                             }
 
-                            await Helpers.DlassNoteUploader.UploadPngNoteAsync(imagePathWithName);
+                            await Helpers.DlassNoteUploader.UploadNoteFileAsync(imagePathWithName);
                         }
                         catch (Exception)
                         {
diff --git a/Ink Canvas/MainWindow_cs/MW_Screenshot.cs b/Ink Canvas/MainWindow_cs/MW_Screenshot.cs
index 844c0982..18ef9fec 100644
--- a/Ink Canvas/MainWindow_cs/MW_Screenshot.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_Screenshot.cs	
@@ -76,14 +76,7 @@ namespace Ink_Canvas
                         await Task.Delay(TimeSpan.FromMinutes(delayMinutes));
                     }
 
-                    var uploaded = await Helpers.DlassNoteUploader.UploadPngNoteAsync(savePath);
-                    if (uploaded && !isHideNotification)
-                    {
-                        Dispatcher.Invoke(() =>
-                        {
-                            ShowNotification($"笔记已自动上传到Dlass");
-                        });
-                    }
+                    await Helpers.DlassNoteUploader.UploadNoteFileAsync(savePath);
                 }
                 catch (Exception)
                 {
diff --git a/Ink Canvas/Windows/DlassSettingsWindow.xaml b/Ink Canvas/Windows/DlassSettingsWindow.xaml
index fe993dd6..9591776b 100644
--- a/Ink Canvas/Windows/DlassSettingsWindow.xaml	
+++ b/Ink Canvas/Windows/DlassSettingsWindow.xaml	
@@ -341,13 +341,13 @@
                                     
                                     <ui:SimpleStackPanel Orientation="Vertical" Spacing="4">
                                         <ui:ToggleSwitch x:Name="ToggleSwitchAutoUploadNotes"
-                                                         Header="自动上传PNG笔记"
+                                                         Header="自动上传笔记"
                                                          FontSize="14"
                                                          Foreground="{StaticResource TextForeground}"
                                                          Toggled="ToggleSwitchAutoUploadNotes_Toggled">
                                         </ui:ToggleSwitch>
                                         
-                                        <TextBlock Text="启用后，保存的PNG截图将自动上传到所选班级的白板。" 
+                                        <TextBlock Text="启用后，保存的PNG截图和ICSTK墨迹文件将自动上传到所选班级的白板。" 
                                                    FontSize="12" 
                                                    Foreground="{StaticResource TextSecondary}"
                                                    TextWrapping="Wrap"