Lifelong positive syphilis antibody will not affect your health, because when infected with syphilis, the antibody will exist for a long time after regular treatment, and will not affect your health.
Antibodies to syphilis are carried for life from the time of infection to the time of cure, and the persistence of the antibodies only indicates that the person is infected with syphilis or has been infected with syphilis before, and is generally not contagious after cure. Therefore, as long as the titer of syphilis antibody remains within the normal range, no further treatment is needed and it will not affect the body.
Syphilis is mostly transmitted through sexual contact, blood, and mother-to-child transmission, so it is recommended to pay attention to unclean sex and avoid sharing needles.