Hepatitis B surface antigen carriers are people who are positive for hepatitis B surface antigen but have normal liver function. Hepatitis B surface antigen carriers usually have no special symptoms, and blood tests may show that they are positive for hepatitis B surface antigen, but their liver function and liver ultrasound tests are normal. This group of people is determined to be infected by hepatitis B virus, but it does not cause inflammatory activity and fibrosis of the liver. These people have the possibility of developing viral hepatitis and cirrhosis. Regardless of whether they feel unwell or not, they should be regularly re-examined for Hepatitis B two-pair test, liver function, liver ultrasound, liver hardness test, liver fibrosis indexes, and Hepatitis B DNA quantitative test. Follow up and observe or further treatment according to physician’s instruction.