Can handle the health certificate of health practitioners. According to the Food Safety Law of People's Republic of China (PRC), people suffering from digestive tract infectious diseases such as dysentery, typhoid fever and viral hepatitis, and people suffering from diseases that hinder food safety such as active tuberculosis, suppurative or exudative dermatosis are not allowed to engage in the work of directly eating food. Hepatitis B is not an infectious disease in the digestive tract, and HBsAg positive people can engage in related work in the food industry.