Acquired immunodeficiency syndrome, also known as AIDS, is a systemic sexually transmitted disease caused by HIV infection, and is most easily transmitted through sexual transmission, especially through high-risk unclean sex and unprotected sex. In addition, there are other ways of transmission, such as blood transmission, sharing of injection needles, if the needle is contaminated with HIV may cause transmission. In addition, HIV can also be transmitted from mother to child, that is, if the mother is infected with HIV, if not properly blocked, the virus can infect the fetus through the placenta, so that the fetus will also be infected with AIDS.