This is a prospective, non-randomized, clinical observational cohort study. The subjects are the advantageous population for functional cure of hepatitis B in HIV/HBV co-infected patients . Depending on whether interferon therapy is used in the real world , the patients are divided into two groups: the ART combined with interferon group and the ART alone group, with 30 cases in each group. Hepatitis B surface antigen seroclearance rate and seroconversion rate will be observed during the study period.
