The main reason why the vagina appears to be sensitive is that it is very rich in vaginal nerve endings, which cause localized vaginal contractions through contact. Especially when sex, sexual contact will lead to vaginal mucosa, muscle excitation, resulting in local contraction, vaginal tightness. After sex, both men and women will reach orgasm very quickly, mainly due to more localized nerve endings, which is a normal phenomenon. Especially the clitoral area is more sensitive, more nerve-rich, touching it is easy to lead to sexual arousal. So usually pay attention to the hygiene of the vulva, especially during sex and menstruation, to avoid pathogenic bacteria infections that cause increased local secretions or discomfort.