diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/TrialConfigDTO.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/TrialConfigDTO.cs
index fc9e596b..8fe7a38d 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/TrialConfigDTO.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/DTO/TrialConfigDTO.cs
@@ -407,7 +407,7 @@ namespace IRaCIS.Core.Application.Contracts
         /// <summary>
         /// 阅片工具
         /// </summary>
-        public ReadingTool? ReadingTool { get; set; }
+        public ReadingTool? ReadingTool { get; set; } = IRaCIS.Core.Domain.Share.ReadingTool.Dicom;
 
         /// <summary>
         /// 仲裁规则/对象