Finger in the anus generally does not transmit HIV. AIDS is a systemic immunodeficiency syndrome caused by human immunodeficiency virus (HIV) infection. HIV (human immunodeficiency virus) is mainly found in the patient’s blood, semen, vaginal secretions, breast milk and other body fluids. When a normal person comes into contact with these body fluids of an infected person, he or she may be infected. HIV is mainly transmitted sexually, through blood, and from mother to child. During sexual intercourse, HIV can invade the body through tiny gaps caused by friction; when sharing a needle with an infected person for drug use or entering blood infected with the virus can lead to the virus; pregnant women infected with HIV can pass the virus to the fetus through the placenta. So sticking your finger in the anus is generally not contagious. However, if there is bleeding from the other person’s anus and there is a wound on your own finger, it may lead to HIV infection. If the patient is worried about the infection of AIDS, it is recommended to consult a doctor in time to improve the relevant examination, so as not to delay the condition.