The reason why anal sex is easy to get AIDS is that anal sex is easy to cause damage to the skin and mucous membrane of the anal canal and the rectum, which makes the HIV virus invade through the damage and lead to infection. The mucous membrane of the rectum is rich in blood vessels, and the mucous membrane layer is relatively thin, so it is easier to break, the friction brought about by anal sex is easy to make the mucous membrane layer of the capillary rupture, then both the active and passive parties will come into contact with each other’s intestinal fluids, prostate fluids, semen, blood, and so on, which creates the conditions for the spread of HIV. But the correct use of condoms can reduce the chances of infection, wearing a condom throughout sex can effectively block the two sides of the sex organs and secretions contact, both have a protective effect. If you are not sure of your partner’s health condition, it is best not to have sex. If you have unsafe sex, please go to the regular hospital in time, under the guidance of the doctor for examination, as soon as possible to rule out or find sexually transmitted diseases.