The main manifestations of neocoronavirus infection are fever, dry cough, and malaise. The main manifestations of new coronavirus infection are fever, dry cough and malaise. Some patients may have nasal congestion, runny nose, sore throat, decreased or loss of smell and taste, conjunctivitis, myalgia and diarrhea as the main manifestations. In severe cases, respiratory distress and/or hypoxemia may appear one week after the onset of the disease, and in severe cases, the disease may rapidly progress to acute respiratory distress syndrome, septic shock, uncorrectable metabolic acidosis, coagulation dysfunction, and multiorgan failure, etc. The above clinical symptoms are only used as a basis for diagnosis. The above clinical symptoms only serve as the basis for diagnosis, and tests such as nucleic acid test, chest CT and new coronary antibody are also needed for definitive diagnosis. For asymptomatic infected persons and light cases, centralized isolation management can be implemented, while symptomatic treatment and condition monitoring are carried out, and if the condition worsens, it should be transferred to a designated hospital for treatment. For ordinary, severe and critical cases and cases with severe high-risk factors, treatment should be centralized in designated hospitals.