Asymptomatic currently refers mostly to people with asymptomatic infection with Neocoronavirus, and conversion usually takes about 1 week, and in a few patients it may take up to 2 weeks. Asymptomatic infected patients are those who do not have clinical symptoms such as fever, cough, sore throat, etc., and at the same time, there is no manifestation of pneumonia seen on CT imaging, and the respiratory tract and other specimens of the New Coronavirus pathogenicity test or serum specific immunoglobulin antibody test is positive. Omicron asymptomatic infected patients from the current clinical treatment experience, the turnaround time is usually about a week, a few infected people about 2 weeks to turn negative. For the new coronavirus asymptomatic infected persons to be included in the prevention and control management, after the discovery of asymptomatic infected persons, to focus on isolation for 14 days, in principle, focus on isolation for 14 days, after two consecutive, 24-hour intervals of negative nucleic acid test can be lifted isolation, if the nucleic acid test is still positive, then continue to isolate the person for medical observation.