Anti Hepatitis B Virus Surface Antibody 290mIU/mL is considered positive for Anti Hepatitis B Virus Surface Antibody, which is normal. Anti-hepatitis B virus surface antibody is a protective antibody produced by vaccination and previous infection with hepatitis B virus, which indicates that the human body is resistant to hepatitis B virus infection and can protect against the attack of hepatitis B virus. However, it should be noted that this antibody is a consumable antibody, with the progress of time, the number of antibody gradually decreases and eventually loses the ability to resist, therefore, it is necessary to go to the hospital regularly for hepatitis B five tests. Due to the increasing number of hepatitis B infected patients in China, it is recommended that people should go to community hospitals regularly for hepatitis B vaccination according to the vaccination schedule. Adopt good living habits, don’t drink or smoke, and check liver function regularly.