Hepatitis B surface antibody greater than 10 is better. Hepatitis B surface antibodies are protective antibodies that protect the body from the hepatitis B virus. Hepatitis B surface antibodies are produced when the surface antigen of the hepatitis B virus stimulates the body and neutralizes the hepatitis B virus. Usually its positivity indicates a previous infection with the hepatitis B virus that has been cured, or a hepatitis B vaccination that has produced protective antibodies. The higher the Hepatitis B surface antibodies in the serum, the greater the protection. If the titer of Hepatitis B Surface Antibody is 4~10 units, it means that one’s resistance to Hepatitis B virus is insufficient, and one is likely to be infected with Hepatitis B virus, and it is recommended to receive a booster dose of Hepatitis B vaccine. If the hepatitis B surface antibody is more than or equal to 10, it indicates that the body has the ability to resist the virus, and there is no need to be vaccinated again.