Oral sex carries the potential for HIV (Human Immunodeficiency Virus) infection. Whether oral sex can be infected with HIV is related to whether the oral mucosa is broken or not. HIV is mainly found in human body fluids, such as vaginal secretions, semen, and blood. Oral saliva does not contain HIV. Whether or not oral sex is infected with HIV is related to the following factors: 1. Oral mucous membrane breakage: If there are oral mucous membrane ulcers or oral mucous membrane breakage caused by friction during oral sex, HIV in blood may pass through the breakage. 2. No oral mucous membrane damage: During oral sex, if the oral mucous membrane skin is intact, it is unlikely to be infected with HIV. If you have high-risk sex, it is recommended that you go to a regular hospital and get tested under the guidance of a doctor.