1、打开includes\modules\shipping文件夹，把sto_express.php复制多一份，重名为tt_express.php；
2、打开tt_express.php，ctrl+F调出“查找替换框”将所有“sto_express”替换成“tt_express” ，所有“申通快递”替换成“天天快递”；
3、打开languages\zh_cn\shipping文件夹，把sto_express.php复制多一份，重命名为tt_express；
4、再 将打开我们重命名好的tt_express.php，ctrl+F调出“查找替换框”将所有 “sto_express”替换成“tt_express” ，所有“申通快递”替换成“天天快递”（说明：步骤3.4是创建中文语言包，如果需要创建英文和繁体的语言包，请自行打开languages\en_us \shipping和languages\zh_tw\shipping进行步骤3.4的操作）
5、Includes/inc_constant.php第237行加上相应如“|tt_express”==原程序为：/* 配送方式 */define('SHIP_LIST', 'cac|city_express|ems|flat|fpd|post_express|post_mail|presswork|sf_express|sto_express|yto|zto');==修改后程序为：define('SHIP_LIST', 'cac|city_express|ems|flat|fpd|post_express|post_mail|presswork|sf_express|sto_express| tt_express|yto|zto');
6、admin\templates\shipping_area_info.ht第12行加上相应如“|| $shipping_area.shipping_code =='tt_express'”==原程序为：{if $shipping_area.shipping_code =='ems' || $shipping_area.shipping_code =='yto' || $shipping_area.shipping_code =='zto' || $shipping_area.shipping_code =='sto_express' || $shipping_area.shipping_code =='post_mail' || $shipping_area.shipping_code =='sf_express' || $shipping_area.shipping_code =='post_express' }==修改后程序为：{if $shipping_area.shipping_code =='ems' || $shipping_area.shipping_code =='yto' || $shipping_area.shipping_code =='zto' || $shipping_area.shipping_code =='sto_express' || $shipping_area.shipping_code =='post_mail' || $shipping_area.shipping_code =='sf_express' || $shipping_area.shipping_code =='tt_express' ||$shipping_area.shipping_code =='post_express' }
7、进入后台更新网站缓存，完成插件添加。