The new coronavirus will lead to clinical death of the patient, mainly due to the following reasons: 1. The virus will invade the respiratory tract and lungs and cause respiratory failure, resulting in the patient’s inability to carry out the normal exchange of blood oxygen. The lungs need to be assisted in respiration, including the use of a ventilator. 2, the patient will have circulatory disorders, including shock, acidosis, etc. will occur, which will lead to its blood transport function is affected. 3, multi-organ failure, the clinical need to be actively in the ICU and other intensive care unit for isolation, monitoring and treatment. For pneumonia caused by the new coronavirus, its early symptoms are similar to colds, but the disease develops very rapidly, and the virus has a higher mortality rate for patients with underlying diseases, such as diabetes, cerebral infarction, hypertension, and other elderly people with underlying diseases.