Under normal circumstances, menstruation will be cleared in 3-7 days, if the menstruation is not cleared for more than 9 days, it is an abnormal phenomenon and must be given clinical attention. If the menstrual flow is dribbling, it may be caused by endometrial inflammation, endometrial polyps or submucosal fibroids, pelvic tumors, endometriosis, as well as coagulation dysfunction, endocrine disorders, which may lead to the appearance of this situation. So routine blood tests, gynecological exams are recommended, as well as cervical cancer screening and ultrasound if you haven’t had one within a year. If necessary, it is also recommended to do diagnostic scraping, and send the scraped out tissues to pathology for final diagnosis, and then give appropriate drugs for treatment. It is also recommended that women should not have coitus during menstruation, change sanitary napkins regularly, and should not eat foods that activate blood circulation or drink alcohol.