diff --git a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
index 7a6a2ab32..81269d85f 100644
--- a/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
+++ b/IRaCIS.Core.API/Controllers/UploadDownLoadController.cs
@@ -944,7 +944,7 @@ namespace IRaCIS.Core.API.Controllers
                 var progress = new
                 {
                     TotalCount= totalCount,
-                    TotalSize= totalSize,
+                    TotalSize = (totalSize / 1024 / 1024).ToString("0.00") + " MB",
 
                     CountPercent = totalCount > 0
                         ? Math.Round(receivedCount * 100m / totalCount, 2).ToString()
@@ -1005,6 +1005,7 @@ namespace IRaCIS.Core.API.Controllers
                         {
                             foreach (var instance in series.InstanceList)
                             {
+                                abortToken.ThrowIfCancellationRequested();
 
                                 try
                                 {
@@ -1012,7 +1013,6 @@ namespace IRaCIS.Core.API.Controllers
                                     receivedSize = receivedSize + instance.FileSize ?? 0;
                                     receivedCount++;
 
-                                    abortToken.ThrowIfCancellationRequested();
 
                                     var entryPath =
                                         $"{patient.PatientIdStr}/{studyTime}_{modalitysStr}/IMAGE/{instance.FileName}";
@@ -1149,7 +1149,7 @@ namespace IRaCIS.Core.API.Controllers
                 var progress = new
                 {
                     TotalCount = totalCount,
-                    TotalSize = totalSize,
+                    TotalSize = (totalSize / 1024 / 1024).ToString("0.00") + " MB" ,
 
                     CountPercent = totalCount > 0
                         ? Math.Round(receivedCount * 100m / totalCount, 2).ToString()
@@ -1210,6 +1210,7 @@ namespace IRaCIS.Core.API.Controllers
                         {
                             foreach (var instance in series.InstanceList)
                             {
+                                abortToken.ThrowIfCancellationRequested();
 
                                 try
                                 {
@@ -1217,7 +1218,6 @@ namespace IRaCIS.Core.API.Controllers
                                     receivedSize = receivedSize + instance.FileSize ?? 0;
                                     receivedCount++;
 
-                                    abortToken.ThrowIfCancellationRequested();
 
                                     var entryPath =
                                         $"{visit.SubjectCode}_{visit.VisitName}/{studyTime}_{modalitysStr}/IMAGE/{instance.FileName}";
@@ -1378,20 +1378,31 @@ ClinicalDataDownloadDTO inCommand)
 
                     abortToken.ThrowIfCancellationRequested();
 
-                    //当前完成大小
-                    receivedCount++;
+                    try
+                    {
+                        //当前完成大小
+                        receivedCount++;
 
-                    var entryPath = $"{data.FileName}";
+                        var entryPath = $"{data.FileName}";
 
-                    var entry = zip.CreateEntry(entryPath, CompressionLevel.Fastest);
+                        var entry = zip.CreateEntry(entryPath, CompressionLevel.Fastest);
 
-                    await using var entryStream = entry.Open();
-                    await using var source = await _oSSService.GetStreamFromOSSAsync(data.Path);
+                        await using var entryStream = entry.Open();
+                        await using var source = await _oSSService.GetStreamFromOSSAsync(data.Path);
 
 
-                    await source.CopyToAsync(entryStream, 32 * 1024, abortToken);
+                        await source.CopyToAsync(entryStream, 32 * 1024, abortToken);
+                    }
+                    catch (Exception ex)
+                    {
 
-                    await NotifyProgressAsync();
+                        Log.Logger.Warning($"处理文件{data.FileName}:{data.Path}失败: {ex.Message}");
+                    }
+                    finally
+                    {
+                        await NotifyProgressAsync();
+
+                    }
 
                 }