Inclusion Criteria:

1. Age above 18 years old (including the cut-off value), regardless of gender;

2. Patients diagnosed with 2019-ncov infection according to the diagnostic criteria of
the latest edition of the Diagnosis and Treatment Plan for 2019-ncov Pneumonia
issued by the Health Commission of China;

3. Informed consent has been signed.

Exclusion Criteria:

1. Known or suspected allergic to the components of Azivudine tablets;

2. Patients with severe liver, kidney, heart and other organ damage;

3. Pregnant or lactating women who planned to give birth during or within 6 months
after the trial;

4. Had participated in other clinical trials or were using investigational drugs within
12 weeks before medication;