Infection with novel coronavirus, like infection with other respiratory viruses such as adenovirus, respiratory syncytial virus, influenza A virus, influenza B virus and other common viruses, is a self-limiting disease that can be cured in 7-10 days with normal body resistance and no serious complications. However, new coronavirus is a newly discovered acute respiratory infectious disease with human-to-human transmission, and the new coronavirus mainly invades the respiratory tract as well as the lungs, and critically ill and severely ill patients will have or chest tightness, difficulty in breathing, and serious complications such as acute respiratory distress syndrome, respiratory failure, and multi-organ failure within 1 week. Therefore, whether the new coronavirus can heal itself needs to be observed, and it is related to whether the patient has underlying diseases as well as age and body resistance condition.