Novel coronavirus is a new, never found in humans coronavirus. The clinical manifestations are atypical, similar to the symptoms of common cold and flu, with fever, cough and malaise. Some patients will have respiratory symptoms such as dyspnea and shortness of breath, as well as gastrointestinal symptoms such as nausea, vomiting, and diarrhea; in severe cases, acute respiratory failure will occur, and in later stages, critical complications such as acute respiratory distress syndrome, bleeding and coagulation dysfunction, and sepsis will result.