Vaginal burning is mostly caused by vaginal inflammation, but it may also be related to other causes. 1. Vaginal inflammation: Vaginal infection caused by pathogenic bacteria causes swelling of the vaginal mucosa and pulls on the nerves, resulting in a burning sensation in the vagina, such as trichomoniasis, bacterial vaginitis or mycotic vaginitis. It is also accompanied by abnormal leucorrhea secretion and leucorrhea odor, which requires routine leucorrhea examination in the hospital and treatment with suitable medication according to the test results. 3, improper sex life: the mucous membrane of female vaginal wall is fragile and easily stimulated by external bad factors. If the action is too rough and lasts long during sex, small blood vessels in the vaginal wall may rupture and vaginal burning may occur; 4, vaginal mucous membrane atrophy: premature ovarian failure, menopause, chronic vulvar dystrophy, etc. may cause vaginal mucous membrane atrophy and thus vaginal burning may occur. Vaginal burning sensation. It is important to identify the specific cause and take targeted treatment.