6.2. General Treatment Bed rest, strengthen supportive treatment, ensure sufficient energy; pay attention to water-electrolytes balance and maintain the stability of the internal environment; closely monitor vital signs and finger oxygen saturation, and so on. Monitor the blood routine, urine routine, C-reactive protein (CRP) and health indications (liver enzyme, myocardial enzyme, renal function, etc.), coagulation function, arterial blood gas analysis if necessary, and recheck chest imaging. According to the change of oxygen saturation, give effective oxygen therapy in time, including oxygen given by nasal catheter or mask. If necessary, apply high flow oxygen therapy via the nose, noninvasive or invasive mechanical ventilation, and so on. Antiviral treatment: no effective antiviral drug at present. Treat with IFN-α aerosol inhalation (five million U per time for adults, two times per day), and/or Lopinavir/Ritonavir oral administration (two tablets per time, two times per day). Antibiotic treatment: avoid blind and improper use of antibiotics, especially the combination use of broad-spectrum antibiotics. Strengthen bacteriological monitoring. Antibiotics should be used in time in secondary bacterial infection.