The girl’s lower body odor is not necessarily infected with AIDS, the girl’s lower body odor may also be due to poor hygiene habits, do not change underwear, or because of the infection of the vulva, vagina, inflammation caused by the lower body odor. Therefore, girls should pay attention to keep the vulva clean and hygienic, change the underpants frequently, and go to the hospital for routine examination of leucorrhoea if there is any inflammation of the vagina, and give treatment actively. AIDS is a sexually transmitted disease, spread through sex, kissing or blood injection. AIDS is an infectious disease for women who are not clean, but most girls will not get AIDS if they do not have sex or improper habits.