diff --git a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
index fe49b52..cce94f4 100644
--- a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
+++ b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
@@ -1199,8 +1199,8 @@ SET FOREIGN_KEY_CHECKS = 1;";
                     //}
                     #endregion
 
-
                     StringBuilder sb = new StringBuilder();
+                    int count = 0;
                     #region 放入import_niagara_item資料表
                     foreach (var row in ds)
                     {
@@ -1221,6 +1221,16 @@ device_floor_tag,  device_master_tag, device_last_name_tag, device_serial_tag, d
                                         row.isHistory + ", now() " +
                                         ");";
                         sb.Append(ss);
+                        count++;
+                        if (count == 100)
+                        {
+                            using (TransactionScope scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
+                            {
+                                await conn.ExecuteAsync(sb.ToString());
+                            }
+                            sb.Clear();
+                            count = 0;
+                        }
                     }
                     if (sb.Length > 0)
                     {