diff --git a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
index f135096..ef63654 100644
--- a/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
+++ b/Repository/BackendRepository/Implement/NiagaraDataSynchronizeRepository.cs
@@ -143,12 +143,12 @@ namespace Repository.BackendRepository.Implement
                             {
                                 sb.Append($@" -- tag 第二碼為小類(除了安全系統之外)
                                     update import_niagara_tag set device_name_tag = device_system_tag
-                                    where (device_system_tag <> 'S' and device_system_tag <> 'CWB' and device_system_tag <> 'B');  
+                                    where (device_system_tag <> 'S' and device_system_tag <> 'CWB' and (device_name_tag <> 'EL' or device_name_tag <> 'ES'));  
 
                                     update import_niagara_tag a join dic_system b 
 				                                    on a.device_name_tag COLLATE utf8mb4_general_ci = b.s2_code
                                     set device_system_tag = b.s1_code -- tag 第二碼為小類(除了安全系統之外)
-                                    where (device_system_tag <> 'S' and device_system_tag <> 'CWB' and device_system_tag <> 'B');  -- 安全系統 第二段大類 第四段小類");
+                                    where (device_system_tag <> 'S' and device_system_tag <> 'CWB' and (device_name_tag <> 'EL' or device_name_tag <> 'ES'));  -- 安全系統 第二段大類 第四段小類");
                                 await conn.ExecuteAsync(sb.ToString());
                             }
                         }