diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
index 1c32fe7d8..bba7f9d64 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingImageTaskViewModel.cs
@@ -2165,14 +2165,14 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// <summary>
         /// 标记工具
         /// </summary>
-        public string MarkTool { get; set; }
+        public string MarkTool { get; set; } = string.Empty;
 
         public decimal RowIndex { get; set; }
 
         /// <summary>
         /// 截图地址
         /// </summary>
-        public string PicturePath { get; set; }
+        public string PicturePath { get; set; } = string.Empty;
 
         /// <summary>
 		/// 任务Id
@@ -2184,9 +2184,9 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// </summary>
         public Guid TrialId { get; set; }
 
-        public string MeasureData { get; set; }
+        public string MeasureData { get; set; } = string.Empty;
 
-        public string OtherMeasureData { get; set; }
+        public string OtherMeasureData { get; set; } = string.Empty;
 
         public Guid? SeriesId { get; set; }
 
@@ -2212,7 +2212,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 
         public decimal? WL { get; set; }
 
-        public string BlindName { get; set; }
+        public string BlindName { get; set; } = string.Empty;
 
         public bool IsDicomReading { get; set; } = true;
 
@@ -2232,9 +2232,9 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// </summary>
         public Guid? OtherStudyId { get; set; }
 
-        public string OtherMarkTool { get; set; }
+        public string OtherMarkTool { get; set; } = string.Empty;
 
-        public string OtherPicturePath { get; set; }
+        public string OtherPicturePath { get; set; } = string.Empty;
 
         public int? OtherNumberOfFrames { get; set; }