diff --git a/VOL.Business/Services/Training/I_TrainingDataService.cs b/VOL.Business/Services/Training/I_TrainingDataService.cs
index fbae388..dcbffdd 100644
--- a/VOL.Business/Services/Training/I_TrainingDataService.cs
+++ b/VOL.Business/Services/Training/I_TrainingDataService.cs
@@ -2067,12 +2067,17 @@ namespace VOL.Business.Services.Training
 
             var heartRateDataList = await query.ToListAsync();
 
-            if (heartRateDataList.Count == 0)
-                return res;
+            //if (heartRateDataList.Count == 0)
+            //    return res;
 
             var classRoom = await _teacherRepository.DbContext.Set<Ai_ClassRoomRecord>().Include(x => x.ClassroomStudentRecord)
                 .Where(x => x.Id == id)
-                .FirstAsync();
+                .FirstOrDefaultAsync();
+
+            if (classRoom == null)
+            {
+                throw new Exception("未找到对应的班级记录");
+            }
 
             var classRoomStudent = await _teacherRepository.DbContext.Set<Ai_ClassroomStudentRecord>()
                 .Where(x => x.ClassRoomRecordId == id)
@@ -2084,8 +2089,9 @@ namespace VOL.Business.Services.Training
             res.PeopleNumber = $"{heartRateDataList.GroupBy(x => x.StudentNo).Count()}/{classRoomStudent.Count}";
             res.PeopleNumberBySex = $"{classRoomStudent.Count(x => x.Sex == SexType.Male)}/{classRoomStudent.Count(x => x.Sex == SexType.Female)}";
 
-            res.AvgHR = $"{(int)(heartRateDataList.Sum(x => x.Value) / heartRateDataList.Count)} 次/分";
-            res.Consumption = $"{Math.Abs(heartRateDataList.Sum(x => x.Consumption ?? 0) / heartRateDataList.Count)} 千卡";
+            res.AvgHR = heartRateDataList.Count > 0 ? $"{(int)(heartRateDataList.Sum(x => x.Value) / heartRateDataList.Count)} 次/分" : "0 次/分";
+
+            res.Consumption = heartRateDataList.Count > 0 ? $"{Math.Abs(heartRateDataList.Sum(x => x.Consumption ?? 0) / heartRateDataList.Count)} 千卡" : "";
             //res.Density = $"{(int)(heartRateDataList.Where(x => x.Strength > 50).Sum(x => x.Strength) / heartRateDataList.Count)} %";
 
             res.Density = $"{(int)Tool.CalculatePercentage(heartRateDataList.Count(x => x.Strength > 50), heartRateDataList.Count)} %";