This study investigates the relationship between service quality, customer satisfaction, loyalty and customer intentions in the overall express delivery industry based on consumers" physical examinations after receiving express delivery through various logistics companies when shopping online. Nowadays, with more and more people shopping online, the express logistics industry has also developed rapidly. However, private express companies have many problems in the service process. The situation of loss, and the violent sorting of courier company employees when sorting the courier, which leads to the damage of the courier often occur, so there are few questions about the impact of courier service quality on customer satisfaction and loyalty. In order to improve the quality of express service for online shopping in China, every online consumer can bring more advanced shopping enjoyment. For research purposes, this study surveyed 282 online consumers. As a meaningful study, the following results are obtained through empirical analysis of the survey data. The analysis results show that, first of all, the safety, timeliness, transportation cost and the service attitude of the courier have a positive impact on customer satisfaction and loyalty among the service quality factors. Secondly, customer loyalty and satisfaction also have a positive impact on usage intentions. Thirdly, it is found that safety, timeliness, transportation costs, and the service attitude of couriers, etc., influence customers’ behavioral intentions through customer satisfaction as a medium. This study will help to improve the service quality of China"s express delivery industry, and at the same time allow online shopping consumers to enjoy the happiness of faster, safer, cheaper and more considerate express delivery services, thus ensuring China"s express delivery industry. sustainable development.