For children, without hepatitis B vaccination, the normal reference range of hepatitis B surface antibody in the body should be 0~10mIU/ml, while after hepatitis B vaccination, the normal reference range of hepatitis B surface antibody is >10mIU/ml. Hepatitis B surface antibody is a kind of protective antibody, which can effectively protect the health of the body and prevent itself from being attacked by hepatitis B virus. For children, the normal reference range of Hepatitis B Surface Antibody varies depending on whether they have received Hepatitis B vaccination or not. In the absence of hepatitis B vaccination, the result of hepatitis B surface antibody test should be negative, that is, 0~10mIU/ml; However, if you have received the hepatitis B vaccine, the normal value of hepatitis B surface antibody is >10mIU/ml, and generally the higher the better. Hepatitis B surface antibody test can reflect hepatitis B infection and previous infection, and also can judge the immunization effect of the vaccine. Parents should pay attention to help their children get vaccinated against hepatitis B in time to maintain their health and promote their growth and development.