You don't need to make an appointment to get a health certificate. It is recommended to apply for a health certificate at the local CDC, generally in the outpatient department or physical examination center, and registration is not required. Eat lightly three days before physical examination, and avoid drinking, staying up late and taking drugs. Fasting 12 hours on the day of physical examination. Please bring your original ID card and one-inch photo to apply on the working day morning.