diff --git a/FrontendWebApi/ApiControllers/HistoryController.cs b/FrontendWebApi/ApiControllers/HistoryController.cs
index b45c3b4..bfbb052 100644
--- a/FrontendWebApi/ApiControllers/HistoryController.cs
+++ b/FrontendWebApi/ApiControllers/HistoryController.cs
@@ -262,6 +262,7 @@ namespace FrontendWebApi.ApiControllers
                         }
                         if (d.type != lastDeviceItem)
                         {
+                            RowPosition = 0;
                             lastDeviceItem = d.type;
                             sheet = workbook.CreateSheet($"{building.Where(x => x.building_tag == lhe.device_number.Split("_")[1]).Select(x => x.full_name).FirstOrDefault()}{"_" + d.type}");
                             #region set cell
@@ -282,7 +283,7 @@ namespace FrontendWebApi.ApiControllers
                             cell.SetCellValue("記錄時間");
                             cell.CellStyle = styleLine12;
                             #endregion
-                            RowPosition = 0;
+                            RowPosition = 1;
                         }
                         else {
                             RowPosition += 1;