diff --git a/SolarPower/Controllers/AnalysisInverterController.cs b/SolarPower/Controllers/AnalysisInverterController.cs
index 27e603f..4ec49d4 100644
--- a/SolarPower/Controllers/AnalysisInverterController.cs
+++ b/SolarPower/Controllers/AnalysisInverterController.cs
@@ -165,7 +165,7 @@ namespace SolarPower.Controllers
                         var temp_item = item.OrderBy(x => x.TIMESTAMP).ToList();
 
                         InverterHistoryInfo Irradiance = new InverterHistoryInfo();
-                        Irradiance.Name = string.Format("{0}:{1}", item.First().INVERTERName, "日照度");
+                        Irradiance.Name = string.Format("{0}:{1}", item.First().INVERTERName, "累積日照量");
                         Irradiance.YaxesKey = "Irradiance";
                         Irradiance.Values = new List<double>();
                         foreach (var history in temp_item)