diff --git a/IRaCIS.Core.Domain/Allocation/VisitTask.cs b/IRaCIS.Core.Domain/Allocation/VisitTask.cs
index f90bc0e71..fb0fc11e9 100644
--- a/IRaCIS.Core.Domain/Allocation/VisitTask.cs
+++ b/IRaCIS.Core.Domain/Allocation/VisitTask.cs
@@ -294,6 +294,9 @@ namespace IRaCIS.Core.Domain.Models
         /// </summary>
         public bool IsConvertedTask { get; set; } = false;
 
+        /// <summary>
+        /// 转换之前的任务Id
+        /// </summary>
         public Guid? BeforeConvertedTaskId { get; set; }
 
         [NotMapped]