AIDS and syphilis are two completely separate diseases and are not clearly related. AIDS is an acquired immunodeficiency syndrome caused by HIV infection. After infection with HIV, the virus attacks the immune system and leads to immune deficiency, which eventually leads to a variety of infections and even tumors that can lead to death. Syphilis is an infectious disease caused by the infection of syphilis spirochetes, the main manifestations of syphilis are skin rashes and syphilitic lesions in the cardiovascular system, etc. However, syphilis can be cured through anti-infective treatment. Both HIV and syphilis are transmitted in the same way, through blood, sex and mother-to-child transmission, so when either disease is detected, the other should be examined and treated.