The most important thing for HIV prevention is to control the source of infection, that is, when HIV carriers or AIDS patients are found, they need to be reported in a timely manner. This part of the patients need to go to the CDC regularly for follow-up, and if there is an indication for antiretroviral treatment, timely antiretroviral treatment is needed. As long as the regular antiviral treatment, the number of virus down, the infectiousness will be significantly reduced. There is also a need to strengthen the knowledge of HIV prevention and treatment, and to advise high-risk groups to use condoms and to regulate the use of blood products and disposable items. For occupational exposure of health care workers, oral drug interruption treatment is needed in time.