AIDS can now run a health license, HIV is mainly present in the patient’s body fluids, such as blood, semen, vaginal secretions, breast milk, urine, saliva, can be transmitted through contact with body fluids containing HIV. There are three ways of transmission: i. Blood transmission, mainly through blood transfusion and blood products. ii. Second, sexual contact transmission, including homosexual and heterosexual sex. Mother-to-child transmission. HIV-infected women can infect their children during pregnancy and delivery. There is no option for HIV in the blood test when applying for a health certificate, and it cannot be transmitted to others in daily contact.