Health certificate is a preventive health examination certificate that proves that the examinee has the health qualities required to do the job. Health certificate mainly involves five industries six diseases, to a large extent to protect the health of practitioners and service recipients. Health certificate refers to the food, drinking water production and management personnel, directly engaged in the production of cosmetics, public **** place directly for the customer service personnel, hazardous operations personnel, radiation workers and school students, etc. in accordance with national health laws and regulations carried out by the pre-practice, practice and schooling period of the health examination. According to the Food Safety Law, the Regulations on Hygiene Management in Public **** Places and other laws and regulations, health certificates are mandatory for people engaged in the five major industries: food production and operation, services in public **** places, professional production of cosmetics and disposable medical and sanitary products, toxic, hazardous and radioactive work, and childcare in childcare institutions. The main diseases covered by the health check are: dysentery, typhoid fever, active tuberculosis, skin diseases (contagious) and other infectious diseases. If found to be suffering from these diseases, they are not allowed to engage in hairdressing and beauty care, direct contact with imported food, public **** bathrooms and other direct customer service work, and need to be cured before they can work.