diff --git a/Backend/Controllers/NiagaraDataSynchronizeController.cs b/Backend/Controllers/NiagaraDataSynchronizeController.cs
index b1f5206..60e02b0 100644
--- a/Backend/Controllers/NiagaraDataSynchronizeController.cs
+++ b/Backend/Controllers/NiagaraDataSynchronizeController.cs
@@ -149,6 +149,7 @@ namespace Backend.Controllers
                 await niagaraDataSynchronizeRepository.DeviceItemComparison();
                 await niagaraDataSynchronizeRepository.CheckItemDiffFullNameAndCover();
                 await niagaraDataSynchronizeRepository.ItemCheckFullNameEmptyReplaceByDeviceName();
+                await niagaraDataSynchronizeRepository.CheckItemIsShowHistory();
                 result = true;
 
                 apiResult.Code = "0000";
diff --git a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
index dddc9da..b1c5a91 100644
--- a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
+++ b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
@@ -512,8 +512,6 @@ namespace Repository.BackendRepository.Implement
         /// <returns></returns>
         public async Task CheckFullNameEmptyReplaceByDeviceName()
         {
-            
-
             using (IDbConnection conn = GetDbConnection())
             {
                 conn.Open();
@@ -534,7 +532,6 @@ namespace Repository.BackendRepository.Implement
                         conn.Close();
                     }
                 }
-
             }
         }
 
@@ -637,7 +634,40 @@ namespace Repository.BackendRepository.Implement
                         conn.Close();
                     }
                 }
+            }
+        }
 
+        /// <summary>
+        /// 先將device_ite的is_show_history全部關掉
+        /// 根據niagara輸入資料來決定要開哪些點
+        /// </summary>
+        /// <returns></returns>
+        public async Task CheckItemIsShowHistory()
+        {
+            //先將所有is_show_history關閉,niagara有的才開啟
+            using (IDbConnection conn = GetDbConnection())
+            {
+                conn.Open();
+                using (TransactionScope scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
+                {
+                    try
+                    {
+                        StringBuilder sb = new StringBuilder();
+                        //先全部關閉
+                        sb.Append("update device_item set is_show_history=0;");
+                        sb.Append("update device_item set is_show_history= 1" +
+                        "(select  distinct  device_system_tag, device_name_tag, device_point_name From import_niagara_item);");
+                        await conn.ExecuteAsync(sb.ToString());
+                    }
+                    catch (Exception exception)
+                    {
+                        throw exception;
+                    }
+                    finally
+                    {
+                        conn.Close();
+                    }
+                }
             }
         }
     }
diff --git a/Repository/BackendRepository/Interface/INiagaraDataSynchronizeRepository.cs b/Repository/BackendRepository/Interface/INiagaraDataSynchronizeRepository.cs
index 5629b9c..e9bdf44 100644
--- a/Repository/BackendRepository/Interface/INiagaraDataSynchronizeRepository.cs
+++ b/Repository/BackendRepository/Interface/INiagaraDataSynchronizeRepository.cs
@@ -31,6 +31,8 @@ namespace Repository.BackendRepository.Interface
         /// <returns></returns>
         Task CheckDiffFullNameAndCover();
 
+        Task CheckItemIsShowHistory();
+
 
         /// <summary>
         /// 比對 device的FullName，若為空則以DeviceName取代