Normally, the depth of female genitalia generally refers to the depth of the vagina, which is about 6-8cm deep, with the front wall of the vagina being 7-9cm long and the back wall being about 9-11cm long, with the vaginal opening covered by the labia majora and labia minora. When a woman is in puberty, with the hormones secreted by the ovaries, the leucorrhoea secretion in the vagina also increases, which can play the role of cleaning and lubricating the vagina, and there are more horizontal folds in the vagina with a certain stretch. Since the vagina is the organ of sexual intercourse and the channel of menstrual blood discharge, it can easily lead to vaginal infections, which can lead to vaginal inflammation and require timely treatment with lotions and medications to avoid recurrence of vaginal infections or upstream infections. It is also important for women to keep their vulva clean and hygienic to reduce vulvar infections.