Menstruation more than 3 days in advance is an abnormal phenomenon, which is common in endometrial inflammation, endometrial polyps, submucosal fibroids, luteal insufficiency and other diseases. Clinical treatment should be given, for example, for luteal insufficiency, it is recommended to take progesterone orally after ovulation for 10 consecutive days, and menstruation will come in 3-7 days after stopping the drug, and it is recommended to use the drug for 3 consecutive menstrual cycles. For endometrial inflammation, active anti-inflammatory treatment is recommended. If submucosal fibroids cause excessive menstruation and even lead to anemia, surgery is recommended. For endometrial polyps, hysteroscopic treatment is recommended.