Hepatitis B surface antibody of more than 20 IU/L is a good phenomenon, suggesting the existence of protective antibodies in the body, not serious. Under normal circumstances, there is no hepatitis B surface antigen in the body, and the normal value of hepatitis B surface antibody is more than 10IU/L. Most of them have been injected with hepatitis B vaccine to produce protective antibody, and if they have been infected with hepatitis B virus before, this antibody will also appear. If the value of hepatitis B surface antibody is more than 20 IU/L, it suggests that there is a defense against hepatitis B, which has a protective effect on the body. A high titer of hepatitis B surface antibody is a good sign and is not serious. However, this antibody may decrease over time. It is recommended to test Hepatitis B 5 at intervals of 3~5 years to determine the quantitative value of Hepatitis B antibody. If abnormal results are found in hepatitis B 5, it is recommended to consult the hospital in time to avoid delaying the condition.