Homosexual infection of AIDS is mainly transmitted to each other through sexual intercourse. The semen and prostate fluid of patients are very rich in HIV, and once the semen or prostate fluid enters the body of a healthy person, it may cause the infection of AIDS. The mucous membrane of the rectum is a single layer of columnar epithelium, easily damaged, when AIDS patients and healthy people have same-sex sex, the penis and rectum in the process of friction, the rectal mucous membrane can appear a small break, thus appearing wounds, semen or prostate fluid can enter the body of normal people through the wound infected with AIDS, thus leading to healthy people infected with AIDS. So to avoid getting infected with AIDS, you need to use condoms correctly, and keep a fixed sexual partner and be clean.