Patients with severe pneumonia can show improvement with symptomatic treatment. If the patient is conscious and has been able to disengage from breathing on his own when ventilator-assisted breathing is performed, the improvement of clinical symptoms, such as coughing, coughing, chest tightness, and symptoms are significantly reduced. The corresponding indexes, such as blood routine white blood cell count returned to normal, and the corresponding organ function indexes, such as liver and kidney function, BNP, and blood gas analysis were not significantly abnormal. When the chest imaging was repeated, the inflammatory lesions in the lung were significantly absorbed than before. When the above signs appear, it indicates the improvement of the disease.