You don't need an empty stomach to get a health certificate. When you apply for a health certificate, you usually need to check the following items: 1. Chest imaging examination to check whether there is active tuberculosis. Second, blood alanine aminotransferase, with the upgrading of modern testing equipment, no need to check liver function on an empty stomach. Third, we should do stool culture to cultivate Vibrio cholerae, typhoid Bacillus and paratyphoid Bacillus. These intestinal infectious diseases endanger people's health. Because the health certificate is aimed at the staff in catering industry, water conservancy industry, medicine industry and beauty service industry, it is necessary to screen these intestinal infectious diseases and respiratory infectious diseases. In addition, you need to bring your ID card to apply for a health certificate, but you don't need an empty stomach.