Hepatitis B 245 positivity generally refers to positive surface antibody, e antibody and core antibody, which is mainly caused by spontaneous clearance of the virus after having been infected with Hepatitis B virus and then self-healing. Positive surface antibody to hepatitis B virus is mainly due to having been vaccinated against hepatitis B or having been infected with hepatitis B virus, but having produced antibodies due to stronger self-resistance. Hepatitis B surface antibody is a protective antibody, which can protect the body from hepatitis B virus infection. Hepatitis B e antibody positive means that the replication of hepatitis B virus at this time has entered into the quiescent phase from the active phase, and the contagiousness of hepatitis B virus at this stage is weakened. Hepatitis B 5 indicators 2, 4, 5 positive suggests that the acute HBV infection after recovery, now has been cured, the follow-up can be regularly monitored hepatitis B 5 and liver function and other indicators.