diff --git a/VOL.Business/Services/ShangWaiMao/ShangWaiMaoService.cs b/VOL.Business/Services/ShangWaiMao/ShangWaiMaoService.cs
index 2ed45e9..c2c158b 100644
--- a/VOL.Business/Services/ShangWaiMao/ShangWaiMaoService.cs
+++ b/VOL.Business/Services/ShangWaiMao/ShangWaiMaoService.cs
@@ -163,12 +163,11 @@ namespace VOL.Business.Services.ShangWaiMao
                 var minuteData = BuildMinuteData(group, baseTime);
 
                 var duration = minuteData.Count == 0 ? 0 : minuteData.Keys.Max();
-                var avgHeartRate = Math.Round(group.Average(x => x.Value), 2);
-                var avgStrength = Math.Round(group.Average(x => x.Strength), 2);
-                var density = group.Any()
-                    ? Math.Round(group.Count(x => x.Strength > 50) * 100D / group.Count(), 2)
-                    : 0D;
-                var totalConsumption = Math.Round(group.Sum(x => (double)(x.Consumption ?? 0)), 2);
+                var avgHeartRate = (int)group.Average(x => x.Value);
+                var avgStrength = (int)group.Average(x => x.Strength);
+                var density = group.Any() ? Math.Round(group.Count(x => x.Strength > 50) * 100D / group.Count(), 0) : 0D;
+
+                var totalConsumption = Math.Abs((int)group.Average(x => x.Consumption ?? 0));
 
                 summarySheet.Cells[summaryRowIndex, 1].Value = group.Key.StudentName;
                 summarySheet.Cells[summaryRowIndex, 2].Value = group.Key.StudentNo;