AIDS is a viral disease of the immune cells and is transmitted in three main ways, blood-borne, sexually transmitted and mother-to-child transmission. The details are as follows: 1. Sexual transmission: probably most of them are unsafe sex outside the couple, actually both male and female, or homosexual aspects. Homosexuality has gradually increased in recent years, and it is relatively easy to spread when men and women are the same sex. And this crowd, the current group of college students relatively more. If gay men around the occurrence of uncontrollable behavior, to do a good job of security measures, to bring condoms; 2, mother-to-child transmission: the main thing is to do the necessary checks before pregnancy. If you check when you are pregnant, only to find out that you have the disease and are HIV carriers, you should go to the hospital in time to find a specialist to evaluate, and the specialist will give relatively reasonable treatment in accordance with the relevant procedures. It is helpful for the personal safety of the pregnant woman with the virus, and for the fetus not to carry vertical transmission. If reasonable measures are taken, a healthy child can be born; 3. Blood transmission: drug users, including sharing needles, are also a means of blood transmission. For drug addicts, all aspects of society need to be caring for drug addicts. In addition, drug users themselves need to know that there are such ways of transmission and go to rehab whenever possible.