Novel coronavirus pneumonia, which is caused by human exposure to 2019 novel coronavirus (2019-nCoV). It has caused infection in all provinces and regions of the country. on January 20, the National Health and Wellness Commission decided to include pneumonia from novel coronavirus infection into the management of statutory infectious diseases category B and take preventive and control measures for category A infectious diseases. Category A infectious disease prevention and control measures: 1, the patient, the pathogen carrier to isolation treatment, isolation period according to the results of medical examination; 2, the suspected patient before the confirmation of isolation treatment in designated places alone; 3, the patient in medical institutions, the pathogen carrier, close contacts of the suspected patient, in designated places for medical observation and other necessary preventive measures, refusing isolation treatment or isolation period Not full of unauthorized out of isolation treatment, the public security organs to assist medical institutions to take compulsory isolation treatment measures.