On the question of how men should prevent AIDS, it is recommended that they should understand how AIDS is transmitted, which is through blood and sexual contact. For men, the first thing they should do is to keep themselves clean, not to have special sexual relations with strangers, keep regular sexual partners, not to visit prostitutes, not to take drugs, not to go to irregular hospitals for treatment of blood or trauma, all these are also the basic prevention of AIDS. Once the pathway of AIDS has been blocked, normal other situations, such as eating and drinking together, bathing together, kissing, these situations are not considered to have the transmission of AIDS.