In general, the menstrual period is normal within 3-7 days, and there is no need to shorten the number of days in this case. If the number of days of menstruation exceeds the normal value, it is necessary to perform ultrasound examination, sex hormone six and other related examinations to clarify the cause and then carry out targeted treatment.1. Endocrine disorders: For example, abnormal uterine bleeding during menopause or puberty, luteal insufficiency or atrophy, or due to long-term work stress, emotional tension and other reasons, resulting in endocrine disorders, can be manifested as prolonged days of menstruation. . At this time, patients should take hormonal drugs for treatment under the guidance of professional doctors, such as progesterone supplementation for patients with abnormal uterine bleeding during menopause or abnormal luteal function, and compound short-acting contraceptive pills for patients with abnormal uterine bleeding during puberty. At the same time, you should relax and overcome anxiety, depression and other adverse emotions to promote physical recovery. 2. uterine diseases: patients with uterine fibroids, endometrial polyps and uterine scar diverticula need to be evaluated comprehensively according to the symptoms and the size of fibroids, polyps and scar diverticula to decide whether to give drug treatment or surgery. For mild symptoms, medications such as mifepristone and tranexamic acid can be given under medical supervision. If the symptoms are severe, surgical treatment is required.