diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
index 1cf028180..59d8244ce 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
@@ -19,6 +19,29 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
 
     }
 
+    public class GetPPDInfoOutDto
+    {
+        /// <summary>
+        /// 最低的PPD
+        /// </summary>
+        public decimal? NadirPPD { get; set; }
+
+        /// <summary>
+        /// 最低PPD的访视
+        /// </summary>
+        public string? LowPPDVisit { get; set; }
+
+        /// <summary>
+        /// 该病灶PPD值最小的访视的长径
+        /// </summary>
+        public decimal? LowPPDLDi { get; set; }
+
+        /// <summary>
+        /// 该病灶PPD值最小的访视的短径
+        /// </summary>
+        public decimal? LowPPDSDi { get; set; }
+    }
+
     public class CalculateTaskInDto
     {
         public Guid VisitTaskId { get; set; }