There are two ways to apply for health certificate: individual and centralized. You don't need to make an appointment to apply for a health certificate. You can apply for a health certificate at the local CDC, usually in the outpatient department or physical examination center. You don't need to register. Eat lightly three days before physical examination, and avoid drinking, staying up late and abusing drugs. Fasting 12 hours on the day of physical examination. Please bring your original ID card and one-inch photo to the office on the morning of the working day. However, if it is handled centrally by the enterprise, it is best to make an appointment in advance by the person in charge of centralized handling, so that the medical examination can be carried out in an orderly manner. If it is handled centrally by enterprises, the general enterprises will have fixed cooperative medical institutions, and different medical institutions have different ways to make appointments in advance, such as telephone appointments and online registration appointments. Therefore, the person in charge needs to call the medical examination institution one week in advance to inquire about the detailed process of centralized handling of health certificates.