AIDS itself is a contagious disease, to know the prevention of AIDS, we must first understand the transmission of AIDS, from the transmission of AIDS can be done, early prevention of AIDS mainly has three transmission channels, the first is blood transmission, the second is mother-to-child transmission and sexual transmission, so do a good job of AIDS prevention, from the following points to start: 1, to avoid sex with high-risk groups, such as sex workers All blood donors and organ donors should be tested for AIDS; 3. Sharing syringes with drug users should be prohibited; 4.