Infectious diseases are divided into three categories: Category A, Category B, Category C. Of particular note is Category A, which belongs to the compulsory management of virulent infectious diseases, mainly including plague, cholera two diseases, if once found in towns must be reported within 2 hours, rural areas can not exceed 6 hours. Category B infectious diseases can take no more than 6 hours in towns and no more than 12 hours in rural areas. Category C requires reporting within 24 hours regardless of rural or urban areas. The reporting system of infectious diseases is an important measure to help early detection of diseases and control the spread of diseases. Among the infectious diseases in category B, pneumonia, anthrax, pulmonary anthrax, highly pathogenic avian influenza and poliomyelitis are reported and measures are taken in accordance with category A infectious diseases.