Vaginal bleeding is considered to be abnormal bleeding from the uterus. Abnormal bleeding from the uterus during adolescence is mostly considered to be due to immaturity of the hypothalamic-pituitary-ovarian axis. Abnormal uterine bleeding during the reproductive years is mostly considered to be caused by pregnancy, fibroids, uterine polyps, excessive endometrial hyperplasia and other factors. When abnormal uterine bleeding occurs during menopause, it is mostly considered to be caused by uterine fibroids, uterine polyps, endometritis, endometrial cancer and so on. For abnormal uterine bleeding at different ages, go to the hospital for relevant examinations to see the causes of abnormal bleeding and treat the symptoms. During the period of abnormal bleeding, it is necessary to pay attention to personal hygiene, keep the perineum clean and dry, wash the vulva every night, and avoid sexual intercourse and tub baths, so as to minimize the stimulation to the vagina and the uterus, so as not to aggravate the situation of abnormal bleeding.