diff --git a/YD_AllHeartRates.Api/Services/Impl/HeartRateReportHelper.cs b/YD_AllHeartRates.Api/Services/Impl/HeartRateReportHelper.cs
index a22eda5..635dff9 100644
--- a/YD_AllHeartRates.Api/Services/Impl/HeartRateReportHelper.cs
+++ b/YD_AllHeartRates.Api/Services/Impl/HeartRateReportHelper.cs
@@ -21,7 +21,12 @@ namespace YD_AllHeartRates.Api.Services.Impl
             };
 
             if (data == null || data.Count == 0)
-                return chart;
+                return new ChartDataDto()
+                {
+                    AxisX = new List<string>() { "8:00", "9:00", "10:00", "11:00", "12:00", "13:00", "14:00", "15:00", "16:00" },
+                    AxisY = new List<int>() { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+                };
+
 
             // 按小时分组计算平均值（四舍五入）
             var hourlyAvg = data
@@ -34,8 +39,8 @@ namespace YD_AllHeartRates.Api.Services.Impl
 
             for (int hour = minHour; hour <= maxHour; hour++)
             {
-                chart.AxisX.Add($"{hour}:00"); 
-                chart.AxisY.Add(hourlyAvg.TryGetValue(hour, out int val) ? val : 0); 
+                chart.AxisX.Add($"{hour}:00");
+                chart.AxisY.Add(hourlyAvg.TryGetValue(hour, out int val) ? val : 0);
             }
 
             return chart;