Fasting is not required to obtain a health certificate. The following items are usually required for the health certificate: a. Imaging of the chest to check for active tuberculosis. Second, the blood test glutathione transaminase, with the modern testing equipment, the liver function has been checked without fasting. Third, the need to do stool culture, stool culture culture is Vibrio cholerae, S. typhi and S. paratyphi, these intestinal infectious diseases endanger people’s health. Because the health certificate is aimed at staff in the catering industry and the water treatment industry, pharmaceutical industry, beauty services, so to screen for these intestinal infectious diseases and respiratory infectious diseases. In addition, you need to bring your own identity document to apply for a health certificate, but you do not need to fast.