1. Aged 18 to 75 years, 2. Real-time fluorescence RT-PCR detection of nucleic acid positive of novel coronavirus in respiratory tract specimens or blood preparation, 3. Sequencing of virus genes in respiratory tract specimens or blood preparation, highly homologous to known novel coronavirus , 4. The patients are diagnosed with common type of novel coronavirus pneumonia according to the Pneumonia Diagnosis and Treatment Program for Novel Coronavirus Infection (Trial Version 6), and have fever and/or respiratory symptoms, and shows pneumonia in the chest CT. 5. Can be included in some severe patients, consistent with any of the following: (1) Respiratory distress, RR >= 30 times/min, (2) Under quiescent condition, Oxygen saturation <= 93%, (3) Arterial partial pressure of oxygen(PaO2)/oxygen concentration(FiO2)<= 300mmHg.

1. Aged 18 to 75 years, 2. Real-time fluorescence RT-PCR detection of nucleic acid positive of novel coronavirus in respiratory tract specimens or blood preparation, 3. Sequencing of virus genes in respiratory tract specimens or blood preparation, highly homologous to known novel coronavirus , 4. The patients are diagnosed with common type of novel coronavirus pneumonia according to the Pneumonia Diagnosis and Treatment Program for Novel Coronavirus Infection (Trial Version 6), and have fever and/or respiratory symptoms, and shows pneumonia in the chest CT. 5. Can be included in some severe patients, consistent with any of the following: (1) Respiratory distress, RR >= 30 times/min, (2) Under quiescent condition, Oxygen saturation <= 93%, (3) Arterial partial pressure of oxygen(PaO2)/oxygen concentration(FiO2)<= 300mmHg.