diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
index a3482c54c..aab463e19 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialConfigService.cs
@@ -34,6 +34,7 @@ namespace IRaCIS.Core.Application
         IRepository<ReadingCriterionPage> _readingCriterionPageRepository,
          IRepository<SystemCriterionKeyFile> _systemCriterionKeyFileRepository,
             IOSSService _oSSService,
+
           IRepository<TrialCriterionKeyFile> _trialCriterionKeyFileRepository,
         IOrganInfoService _iOrganInfoService,
         IRepository<TrialBodyPart> _trialBodyPartRepository,
@@ -60,29 +61,27 @@ namespace IRaCIS.Core.Application
         /// <returns></returns>
         public async Task ReplaceSubject()
         {
-            // 查完整实体（不能只查匿名类，匿名类无实体追踪）
-            var trialList = await _trialRepository.AsQueryable().ToListAsync();
+            // 使用 AsTracking() 确保变更追踪开启
+            var trialList = await _trialRepository
+                .AsQueryable()
+                .AsTracking()  // 显式启用追踪
+                .ToListAsync();
 
-            foreach (var trial in trialList)
+            foreach (var data in trialList)
             {
-                if (trial.TrialObjectNameList == null || !trial.TrialObjectNameList.Any())
+                if (data.TrialObjectNameList == null || !data.TrialObjectNameList.Any())
                     continue;
 
-                foreach (var item in trial.TrialObjectNameList)
+                foreach (var item in data.TrialObjectNameList)
                 {
-                    //item.TrialName = item.TrialName
-                    //    .Replace("受试者", "试验参与者")
-                    //    .Replace("Subject", "Participant");
                     item.Name = item.Name
                         .Replace("受试者", "试验参与者")
                         .Replace("Subject", "Participant");
                 }
+                // 不调用 Update()，直接 SaveChanges
             }
 
-            // EF自动把List序列化为JSON字符串更新到数据库
             await _trialRepository.SaveChangesAsync();
-
-
         }
 
         /// <summary>