Three appointment modes: mobile phone self-service appointment, community on-site appointment, and designated medical examination hospital appointment. In order to facilitate the appointment, Xuzhou Social Security Center provides three channels for retirees to make an appointment: the first is self-service appointment by mobile phone, and retirees can download "Jiangsu Smart People's Society APP". After registering and logging in, they can find the "enterprise retiree physical examination appointment module" on the home page for self-service appointment. After clicking on the designated name, they can search directly, and the names and physical examination times of 24 designated medical institutions will appear.