User adoption and continued use is the key to successful application of mobile check-in service. The study builds a research framework based on Expectation Confirmation Theory, combining Technology Acceptance Model and Switching Cost. The empirical results show that perceived usefulness, perceived ease of use, perceived playfulness, customer satisfaction and switching costs are positively affect mobile check-in users' continuance intention. They are also influenced positively by expectation confirmation in addition to switching cost. Perceived usefulness has significant impact on satisfaction and then has an indirect effect on continuance intention. Finally, suggestions are proposed for mobile check-in operators, including optimizing user experience, improving compatibility and convenience, enhancing the playfulness and interaction, offering customized services and establishing mature score mechanisms.