1. Aged from 18 to 70 years old, 2.The diagnostic criteria of subjects clearly defined as SARS-CoV-2 infected pneumonia shall be based on the criteria of severe patients stipulated in the Novel Coronavirus Infected Pneumonia Protocol (Trial version vii) issued by the National Health Commission, 3. Patients can receive aerosol inhalation, 4. Consent to sign a written informed statement prior to the beginning of the study.

1. Aged from 18 to 70 years old, 2.The diagnostic criteria of subjects clearly defined as SARS-CoV-2 infected pneumonia shall be based on the criteria of severe patients stipulated in the Novel Coronavirus Infected Pneumonia Protocol (Trial version vii) issued by the National Health Commission, 3. Patients can receive aerosol inhalation, 4. Consent to sign a written informed statement prior to the beginning of the study.