diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 1ad89c57f..386c06524 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -352,7 +352,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                  new ReadingCalculateData (){QuestionType=QuestionType.ExistPET,GetStringFun=GetExistPET ,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation, } },
 
                 //垂直径乘积之和（SPD）
-				new ReadingCalculateData (){QuestionType=QuestionType.SPD,GetDecimalFun=GetSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
+				new ReadingCalculateData (){QuestionType=QuestionType.SPD,GetStringFun=GetSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
 
                  // 与基线相比SPD变化的百分比
 			    new ReadingCalculateData (){QuestionType=QuestionType.SPDChange,GetStringFun=CompareBaselineSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
@@ -1861,15 +1861,18 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
         /// </summary>
         /// <param name="inDto"></param>
         /// <returns></returns>
-        public async Task<decimal> GetSPD(ReadingCalculateDto inDto)
+        public async Task<string> GetSPD(ReadingCalculateDto inDto)
         {
-            decimal result = 0;
             var rowInfo = inDto.QuestionInfo.Where(x => x.LesionType == LesionType.TargetLesion).SelectMany(x => x.TableRowInfoList).ToList();
-
             var tableQuestionList = rowInfo.SelectMany(x => x.TableQuestionList).ToList();
+            if (inDto.IsBaseLine && tableQuestionList.Where(x => x.QuestionMark == QuestionMark.PPD).Count() == 0)
+            {
+                return string.Empty;
+            }
 
+            decimal result = 0;
             result = tableQuestionList.Where(x => x.QuestionMark == QuestionMark.PPD).Sum(x => x.Answer.IsNullOrEmptyReturn0());
-            return result;
+            return result.ToString();
 
         }
 
diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoWithoutPETCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoWithoutPETCalculateService.cs
index 50a04412e..7dbf62e26 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoWithoutPETCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoWithoutPETCalculateService.cs
@@ -352,7 +352,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                  new ReadingCalculateData (){QuestionType=QuestionType.ExistPET,GetStringFun=GetExistPET ,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation, } },
 
                 //垂直径乘积之和（SPD）
-				new ReadingCalculateData (){QuestionType=QuestionType.SPD,GetDecimalFun=GetSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
+				new ReadingCalculateData (){QuestionType=QuestionType.SPD,GetStringFun=GetSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
 
                  // 与基线相比SPD变化的百分比
 			    new ReadingCalculateData (){QuestionType=QuestionType.SPDChange,GetStringFun=CompareBaselineSPD,ComputationTriggerList=new List<ComputationTrigger>(){ ComputationTrigger.InitialCalculation,  ComputationTrigger.CTSave,ComputationTrigger.RemoveLesion,}},
@@ -1861,15 +1861,18 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
         /// </summary>
         /// <param name="inDto"></param>
         /// <returns></returns>
-        public async Task<decimal> GetSPD(ReadingCalculateDto inDto)
+        public async Task<string> GetSPD(ReadingCalculateDto inDto)
         {
-            decimal result = 0;
             var rowInfo = inDto.QuestionInfo.Where(x => x.LesionType == LesionType.TargetLesion).SelectMany(x => x.TableRowInfoList).ToList();
-
             var tableQuestionList = rowInfo.SelectMany(x => x.TableQuestionList).ToList();
+            if (inDto.IsBaseLine && tableQuestionList.Where(x => x.QuestionMark == QuestionMark.PPD).Count() == 0)
+            {
+                return string.Empty;
+            }
 
+            decimal result = 0;
             result = tableQuestionList.Where(x => x.QuestionMark == QuestionMark.PPD).Sum(x => x.Answer.IsNullOrEmptyReturn0());
-            return result;
+            return result.ToString();
 
         }