diff --git a/FrontendWebApi/ApiControllers/HistoryController.cs b/FrontendWebApi/ApiControllers/HistoryController.cs
index 0e847bc..a860c82 100644
--- a/FrontendWebApi/ApiControllers/HistoryController.cs
+++ b/FrontendWebApi/ApiControllers/HistoryController.cs
@@ -216,32 +216,66 @@ namespace FrontendWebApi.ApiControllers
                 stylein12.WrapText = true;
                 #endregion
                 var data = he.ToList();
-                ISheet sheet = workbook.CreateSheet($"{building.Where(x => x.building_tag == lhe.device_number.Split("_")[1]).Select(x => x.full_name).FirstOrDefault()}歷史資料");
-                int RowPosition = 0;
-                #region set cell
-                IRow row = sheet.CreateRow(RowPosition);
-                sheet.SetColumnWidth(0, 4 * 160 * 12);
-                sheet.SetColumnWidth(1, 4 * 160 * 12);
-                sheet.SetColumnWidth(2, 4 * 160 * 12);
-                sheet.SetColumnWidth(3, 4 * 160 * 12);
-                ICell cell = row.CreateCell(0);
-                cell.SetCellValue("類型");
-                cell.CellStyle = styleLine12;
-                cell = row.CreateCell(1);
-                cell.SetCellValue("設備名稱");
-                cell.CellStyle = styleLine12;
-                cell = row.CreateCell(2);
-                cell.SetCellValue("數值");
-                cell = row.CreateCell(3);
-                cell.SetCellValue("記錄時間");
-                cell.CellStyle = styleLine12;
-                #endregion
-
                 if (data.Count > 0)
                 {
+                    string lastDeviceItem = string.Empty;
+                    int RowPosition = 0;
+                    IRow row;
+                    ISheet sheet;
+                    #region set cell
+                    sheet = workbook.CreateSheet($"{building.Where(x => x.building_tag == lhe.device_number.Split("_")[1]).Select(x => x.full_name).FirstOrDefault()}{"_" + data[0].type}");
+                    row = sheet.CreateRow(RowPosition);
+                    sheet.SetColumnWidth(0, 4 * 160 * 12);
+                    sheet.SetColumnWidth(1, 4 * 160 * 12);
+                    sheet.SetColumnWidth(2, 4 * 160 * 12);
+                    sheet.SetColumnWidth(3, 4 * 160 * 12);
+                    ICell cell = row.CreateCell(0);
+                    cell.SetCellValue("類型");
+                    cell.CellStyle = styleLine12;
+                    cell = row.CreateCell(1);
+                    cell.SetCellValue("設備名稱");
+                    cell.CellStyle = styleLine12;
+                    cell = row.CreateCell(2);
+                    cell.SetCellValue("數值");
+                    cell = row.CreateCell(3);
+                    cell.SetCellValue("記錄時間");
+                    cell.CellStyle = styleLine12;
+                    #endregion
+
                     foreach (var d in data)
                     {
-                        RowPosition += 1;
+                        if (RowPosition == 0 && lastDeviceItem == "")
+                        {
+                            lastDeviceItem = d.type; //第一次不用建立 sheet;
+                        }
+                        if (d.type != lastDeviceItem)
+                        {
+                            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
+                            row = sheet.CreateRow(RowPosition);
+                            sheet.SetColumnWidth(0, 4 * 160 * 12);
+                            sheet.SetColumnWidth(1, 4 * 160 * 12);
+                            sheet.SetColumnWidth(2, 4 * 160 * 12);
+                            sheet.SetColumnWidth(3, 4 * 160 * 12);
+                            cell = row.CreateCell(0);
+                            cell.SetCellValue("類型");
+                            cell.CellStyle = styleLine12;
+                            cell = row.CreateCell(1);
+                            cell.SetCellValue("設備名稱");
+                            cell.CellStyle = styleLine12;
+                            cell = row.CreateCell(2);
+                            cell.SetCellValue("數值");
+                            cell = row.CreateCell(3);
+                            cell.SetCellValue("記錄時間");
+                            cell.CellStyle = styleLine12;
+                            #endregion
+                            RowPosition = 0;
+                        }
+                        else {
+                            RowPosition += 1;
+                        }
+                        
                         row = sheet.CreateRow(RowPosition);
                         for (var i = 0; i < 4; i++)
                         {