diff --git a/FrontendWebApi/ApiControllers/HistoryController.cs b/FrontendWebApi/ApiControllers/HistoryController.cs
index f61b19d..3f99f55 100644
--- a/FrontendWebApi/ApiControllers/HistoryController.cs
+++ b/FrontendWebApi/ApiControllers/HistoryController.cs
@@ -1230,7 +1230,8 @@ namespace FrontendWebApi.ApiControllers
                                         var abstime = obj["abstime"]["@val"].ToString();
                                         historyRawData.Timestamp = Convert.ToDateTime(abstime).ToString("yyyy-MM-dd HH:mm:ss");
                                         //取得資料
-                                        historyRawData.Value = obj["real"]["@val"].ToString();
+                                        string tag = device_item_info.Points.Equals("st") || device_item_info.Points.Equals("ST") ? "bool" : "real";
+                                        historyRawData.Value = obj[tag]["@val"].ToString();
 
                                         historyRawDatas.Add(historyRawData);
                                     }