diff --git a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
index 3fc391e4c..de1f101a4 100644
--- a/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
+++ b/IRaCIS.Core.Application/Service/Reading/Dto/ReadingCalculateViewModel.cs
@@ -321,7 +321,7 @@ namespace IRaCIS.Core.Application.Service.Reading.Dto
         /// <summary>
         /// 巨噬细胞浸润角度测量
         /// </summary>
-        public decimal MacrophageInfiltrationAngle { get; set; }
+        public decimal? MacrophageInfiltrationAngle { get; set; }
 
         /// <summary>
         /// 微通道测量
diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
index 0fd16cafb..7ea94488b 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
@@ -1090,7 +1090,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                     PlaqueNum = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.PlaqueNumber).Select(x => int.Parse(x.Answer)).FirstOrDefault(),
                     Data = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.AvgFCT).Select(x => decimal.Parse(x.Answer)).FirstOrDefault(),
                     MacrophageInfiltrationMeasurement = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.MacrophageInfiltrationMeasurement).Select(x => x.Answer).FirstOrDefault()??string.Empty,
-                    MacrophageInfiltrationAngle = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.MacrophageInfiltrationAngle).Select(x => x.Answer.IsNullOrEmptyReturn0()).FirstOrDefault(),
+                    MacrophageInfiltrationAngle = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.MacrophageInfiltrationAngle).Select(x => x.Answer.IsNullOrEmptyReturnNull()).FirstOrDefault(),
                     MicrochannelMeasurement = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.MicrochannelMeasurement).Select(x => x.Answer).FirstOrDefault() ?? string.Empty,
                     CholesterolCrystalMeasurement = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.CholesterolCrystalMeasurement).Select(x => x.Answer).FirstOrDefault() ?? string.Empty,
                 });
@@ -1215,7 +1215,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                 // 巨噬细胞浸润角度测量
                 tableAnswers.Add(new ReadingTableQuestionAnswer()
                 {
-                    Answer = oCTFCTInfos.Where(x => x.PlaqueNum == item).Count() == 0 ? string.Empty : oCTFCTInfos.Where(x => x.PlaqueNum == item).Max(x=>x.MacrophageInfiltrationAngle).ToString(),
+                    Answer = oCTFCTInfos.Where(x => x.PlaqueNum == item&&x.MacrophageInfiltrationAngle!=null).Count() == 0 ? string.Empty : oCTFCTInfos.Where(x => x.PlaqueNum == item).Max(x=>x.MacrophageInfiltrationAngle??0).ToString(),
                     Id = NewId.NextGuid(),
                     QuestionId = patchDataStatisticsInfo.Id,
                     TrialId = inDto.TrialId,