A health certificate is a health examination certificate, which proves that someone has had a health examination in a certain year and month. It mainly involves six diseases in five industries, which greatly protects the health of employees and customers. According to the Food Hygiene Law, Regulations on Hygiene Management in Public Places and other laws and regulations, personnel engaged in food production and management, public service, cosmetics, disposable medical and health care products and other professional production, toxic and hazardous and radioactive operations, and kindergartens must hold health certificates. The diseases mainly involved in health examination include viral hepatitis, dysentery, typhoid fever, active tuberculosis, skin diseases and other diseases that endanger health. If you find these diseases, don't engage in direct contact with imported food, hairdressing and beauty salons, public bathrooms and other work that directly serves customers. You can only work after you are cured. People have some misunderstandings about health certificate: First, holding a "health certificate" means good health. The health certificate stipulates that the holder shall have a health examination once a year, and the personnel are mobile, while the examination of the health certificate is relatively static. Some licensees are infected with diseases after the exam, but they still hold qualified health certificates before the next exam. Many diseases are hidden and latent, and carriers themselves do not feel symptoms; Some people are afraid that failing the examination will mean being laid off, deliberately avoiding concealment, and leading patients or carriers with health certificates to continue working. Second, applying for a health certificate is only beneficial to customers, but it is both expensive and troublesome for quite a few staff members. In fact, health certificates guarantee the health and safety of both parties, such as personnel engaged in toxic, harmful and radioactive operations. For them, health examination is an effective way to know their physical condition regularly and ensure their health and safety.