The case or asymptomatic infected person hospitalization, transfer during the patient excreta, vomit, body fluids and their contamination of the environment and objects, timely disinfection at any time, disinfection methods see common contaminated objects disinfection methods, the disinfection products used should be in line with the requirements of the National Health and Health Department of management. Spray disinfection is not recommended for occupied cases. Places where patients are isolated can take measures of exhaust ventilation (including natural ventilation and mechanical exhaust) to maintain indoor air circulation. Ventilation should be carried out 2-3 times a day for not less than 30 minutes each time. Conditional medical institutions should place patients in negative-pressure isolation rooms, suspected cases should be isolated in a single room, and confirmed cases can be placed in the same room. Non-negative pressure isolation room should be well ventilated, can take the exhaust (including natural ventilation and mechanical exhaust), can also use circulating wind air disinfector for air disinfection. Under unoccupied conditions, ultraviolet light can also be used to disinfect the air, and when ultraviolet light is used for disinfection, the irradiation time can be extended to more than one hour. Medical personnel and accompanying personnel in the diagnosis and treatment, care work should be washed and disinfected.