1. Sign the informed consent form, 2. Aged >=18 years, 3. Subjects diagnosed as 2019-nCoV pneumonia, (1) Detection of 2019-nCoV nucleic acid positive by RT-PCR in respiratory tract or blood samples, (2) The virus gene sequence of respiratory tract or blood samples is highly homologous to the known 2019-nCoV, 4. According to the standard of 2019-nCoV pneumonia diagnosis and treatment Program of New Coronavirus infection (trial Fifth Edition) issued by National Health Commission of China, clinical classification: mild, ordinary subjects, (1) Mild type, the clinical symptoms were mild and no pneumonia was found in imaging, (2) Common type, With fever, respiratory tract and other symptoms, the manifestations of pneumonia can be seen on imaging.

1. Sign the informed consent form, 2. Aged >=18 years, 3. Subjects diagnosed as 2019-nCoV pneumonia, (1) Detection of 2019-nCoV nucleic acid positive by RT-PCR in respiratory tract or blood samples, (2) The virus gene sequence of respiratory tract or blood samples is highly homologous to the known 2019-nCoV, 4. According to the standard of 2019-nCoV pneumonia diagnosis and treatment Program of New Coronavirus infection (trial Fifth Edition) issued by National Health Commission of China, clinical classification: mild, ordinary subjects, (1) Mild type, the clinical symptoms were mild and no pneumonia was found in imaging, (2) Common type, With fever, respiratory tract and other symptoms, the manifestations of pneumonia can be seen on imaging.