Adults infected with hepatitis B virus can partly recover from the virus, but some of them carry the virus for a long time. In clinical practice, if more adults are infected with hepatitis B virus, because their immunity is relatively good and they have the ability to recover, many adults infected with hepatitis B virus can indeed be cured by themselves, and they can produce their own protective antibodies. However, there are also a small number of adults, if infected with hepatitis B virus, it will be transformed into chronic hepatitis B. This kind of patients need to be further tested for liver function, liver ultrasound, the number of hepatitis B viruses, and then regular review, and antiviral treatment if necessary, and only a small number of this kind of people can be cured, that is, the virus becomes negative. Both children and adults are at risk of contracting the hepatitis B virus, so it is recommended that they should be immunized with the hepatitis B vaccine in order to produce antibodies to prevent hepatitis B infection.