Positive hepatitis B surface antibody means that the patient’s body has formed antibodies after hepatitis B vaccination, and is immune to the chronic hepatitis B virus, and has established a self-protection mechanism, and the patient is less likely to be infected with chronic viral hepatitis B. The three systems of hepatitis B include the following five items: namely, five items of hepatitis B variable surface antigen, hepatitis B surface antibody, hepatitis B E antigen, hepatitis B E antibody and hepatitis B core antibody. After the patient has been vaccinated against hepatitis B, he is generally positive for hepatitis B surface antibody and negative for the remaining four items. If the patient is found to be positive for hepatitis B surface antigen, he is mostly diagnosed as a patient with chronic viral hepatitis B. At this time, it is not recommended that the patient should be vaccinated against hepatitis B. He should continue to check hepatitis B DNA to see if the virus has replicated. If the patient has replication of the virus, and there is damage to liver function, i.e., elevated glutamic and glutamic aminotransferases, it is recommended that the patient actively consider interferon injection for six months to one year. After active treatment, some hepatitis B patients can turn into carriers, and at this time, patients can consider injecting hepatitis B vaccine, etc.