Health certificate refers to the pre-post, pre-post and age-appropriate health examination for personnel engaged in food and drinking water production and management, personnel directly engaged in cosmetics production, personnel who directly serve customers in public places, hazardous workers, radiation workers and school students according to the provisions of national health laws and regulations. The new version of health certificate has opened the function of online inquiry. The public can query and verify the authenticity of the health certificate by entering the name and health certificate number of the holder on the website.