diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index 2d8ad841b..cad0084a6 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -294,7 +294,7 @@ public class OSSService : IOSSService
                 GetObjectStoreTempToken();
             }
             //token 过期了
-            else if (AliyunOSSTempToken.Expiration.AddSeconds(10) <= DateTime.Now)
+            if (AliyunOSSTempToken?.Expiration.AddSeconds(10) <= DateTime.Now)
             {
                 GetObjectStoreTempToken();
             }
@@ -308,7 +308,7 @@ public class OSSService : IOSSService
                 GetObjectStoreTempToken();
             }
             //token 过期了
-            else if (AWSTempToken.Expiration?.AddSeconds(10) <= DateTime.Now)
+            if (AWSTempToken.Expiration?.AddSeconds(10) <= DateTime.Now)
             {
                 GetObjectStoreTempToken();
             }
diff --git a/IRaCIS.Core.Application/Service/Common/TrialImageDownloadService.cs b/IRaCIS.Core.Application/Service/Common/TrialImageDownloadService.cs
index 5b4d1ef88..109058694 100644
--- a/IRaCIS.Core.Application/Service/Common/TrialImageDownloadService.cs
+++ b/IRaCIS.Core.Application/Service/Common/TrialImageDownloadService.cs
@@ -1051,6 +1051,161 @@ namespace IRaCIS.Core.Application.Service
 
             public string Path { get; set; }
         }
+
+        /// <summary>
+        /// 读取该项目的数据，进行维护
+        /// </summary>
+        /// <param name="_instanceRepository"></param>
+        /// <param name="trialId"></param>
+        /// <returns></returns>
+        [AllowAnonymous]
+        public async Task<IResponseOutput> WriteTrialNeedDealData([FromServices] IRepository<DicomInstance> _instanceRepository, Guid trialId)
+        {
+
+            #region 获取差集数据
+            //var rows = await MiniExcel.QueryAsync<DicomSOPInfo>(@"C:\Users\hang\Desktop\维护数据读取.xlsx");
+
+            //rows = rows.Where(t => !string.IsNullOrEmpty(t.InstanceId.ToString())).ToList();
+
+            //var allRows = await MiniExcel.QueryAsync<NeedDealInstanceInfo>(@"C:\Users\hang\Desktop\AllData.xlsx");
+
+            //allRows = allRows.Where(t => !string.IsNullOrEmpty(t.InstanceId.ToString())).ToList();
+
+            //var needDealRows = allRows.Where(t => !rows.Select(c => c.InstanceId).Contains(t.InstanceId)).ToList();
+
+            //var outputFile = Path.Combine(@"D:\dicomWrite", $"{Guid.NewGuid()}_dicom_info.txt");
+
+            //foreach (var item in needDealRows)
+            //{
+            //    var line = string.Join(",", item.InstanceId, item.Path);
+
+            //    await File.AppendAllTextAsync(outputFile, line + Environment.NewLine);
+            //}
+
+            #endregion
+
+            var folder = FileStoreHelper.GetIRaCISRootDataFolder(_hostEnvironment);
+
+            var needDealRows = _instanceRepository.Where(t => t.TrialId == trialId && t.TransferSytaxUID == "").Select(t => new NeedDealInstanceInfo() { InstanceId = t.Id, Path = t.Path });
+
+
+
+            var outputFile = Path.Combine(folder, $"{Guid.NewGuid()}_dicom_info.txt");
+
+            var outputErrorFile = Path.Combine(folder, $"{Guid.NewGuid()}_dicom_info_error.txt");
+
+            int total = needDealRows.Count();
+
+            Console.WriteLine($"需要处理数量{total}");
+
+            int processed = 0;
+            double lastPercent = 0;
+
+            foreach (var item in needDealRows)
+            {
+
+                try
+                {
+                    await using var stream = await _oSSService.GetStreamFromOSSAsync(item.Path);
+
+                    var dicomFile = DicomFile.Open(stream);
+
+                    var dataset = dicomFile.Dataset;
+                    var fileMeta = dicomFile.FileMetaInfo;
+
+                    var pixelData = DicomPixelData.Create(dicomFile.Dataset);
+
+                    //获取像素是否为封装形式
+                    var syntax = dicomFile.Dataset.InternalTransferSyntax;
+
+                    var stationName = dataset.GetSingleValueOrDefault(DicomTag.StationName, string.Empty);
+
+                    var institutionName = dataset.GetSingleValueOrDefault(DicomTag.InstitutionName, string.Empty);
+
+                    var manufacturer = dataset.GetSingleValueOrDefault(DicomTag.Manufacturer, string.Empty);
+
+                    //PatientID TrialCode_SubjectCode
+                    //var patientID = dataset.GetSingleValueOrDefault(DicomTag.PatientID, string.Empty);
+
+                    //SubjectCode
+                    var clinicalTrialSubjectID = dataset.GetSingleValueOrDefault(DicomTag.ClinicalTrialSubjectID, string.Empty);
+                    //访视visitNum
+                    var clinicalTrialTimePointID = dataset.GetSingleValueOrDefault(DicomTag.ClinicalTrialTimePointID, string.Empty);
+                    var studyInstanceUID = dataset.GetSingleValueOrDefault(DicomTag.StudyInstanceUID, string.Empty);
+                    var seriesInstanceUID = dataset.GetSingleValueOrDefault(DicomTag.SeriesInstanceUID, string.Empty);
+                    var sOPInstanceUID = dataset.GetSingleValueOrDefault(DicomTag.SOPInstanceUID, string.Empty);
+
+                    var numberOfFrames = dataset.GetSingleValueOrDefault(DicomTag.NumberOfFrames, 1);
+
+
+                    // 传输语法 
+                    var transferSyntaxUID = fileMeta.GetSingleValueOrDefault(DicomTag.TransferSyntaxUID, string.Empty);
+                    var sOPClassUID = dataset.GetSingleValueOrDefault(DicomTag.SOPClassUID, string.Empty);
+                    var mediaStorageSOPClassUID = fileMeta.GetSingleValueOrDefault(DicomTag.MediaStorageSOPClassUID, string.Empty);
+
+                    var mediaStorageSOPInstanceUID = fileMeta.GetSingleValueOrDefault(DicomTag.MediaStorageSOPInstanceUID, string.Empty);
+
+
+                    var line = string.Join(",",
+                       item.InstanceId,
+                       stationName,
+                       institutionName,
+                       manufacturer,
+                       clinicalTrialSubjectID,
+                       clinicalTrialTimePointID,
+                       studyInstanceUID,
+                       seriesInstanceUID,
+                       sOPInstanceUID,
+                       numberOfFrames,
+                       transferSyntaxUID,
+                       sOPClassUID,
+                       mediaStorageSOPClassUID,
+                       mediaStorageSOPInstanceUID
+
+                   );
+
+
+                    await File.AppendAllTextAsync(outputFile, line + Environment.NewLine);
+
+                    //维护序列层级四个字段   后再用sql 维护study series 时间拆分 和 MediaStorageSOPInstanceUID
+                    await _instanceRepository.BatchUpdateNoTrackingAsync(
+                           t => t.Id == item.InstanceId,
+                           t => new DicomInstance
+                           {
+                               IsEncapsulated = syntax.IsEncapsulated,
+                               TransferSytaxUID = transferSyntaxUID,
+                               MediaStorageSOPClassUID = mediaStorageSOPClassUID,
+                               SOPClassUID = sOPClassUID,
+                               MediaStorageSOPInstanceUID = mediaStorageSOPInstanceUID
+                           }, false);
+                }
+                catch (Exception ex)
+                {
+
+                    var errorMsg = $"{DateTime.Now} ❌ 失败: {ex.Message} | InstanceId={item.InstanceId}, Path={item.Path}";
+
+                    Console.WriteLine(errorMsg);
+
+                    await File.AppendAllTextAsync(outputErrorFile, errorMsg + Environment.NewLine);
+                }
+                finally
+                {
+                    processed++;
+                    double percent = processed * 100.0 / total;
+
+                    // 每提升 5% 或完成时输出
+                    if (percent - lastPercent >= 2.0 || processed == total)
+                    {
+                        lastPercent = percent;
+                        Console.WriteLine($"{DateTime.Now}   进度: {processed}/{total} ({percent:F2}%)");
+                    }
+                }
+
+
+            }
+
+            return ResponseOutput.Ok();
+        }
         #endregion
     }