Under normal circumstances, hepatitis B surface antibodies of 150 indicate that the body still has the ability to fight the hepatitis B virus and does not require booster shots. Hepatitis B virus surface antibody is a kind of protective antibody produced after hepatitis B vaccination. After the vaccination, it will decline year by year. Therefore, it is best to have regular checkups. Under normal circumstances, only when the surface antibody is lower than 100 and cannot effectively prevent the hepatitis B virus, a booster shot is needed. Therefore, if it is found that the surface antibody of hepatitis B has decreased and a booster shot is needed during the review after vaccination, it is better for the professional doctor to make a comprehensive analysis together with the actual situation of the testing hospital before making a decision.