The normal duration of menstruation is usually 3-7 days, more than 10 days, which is a prolonged period, is considered to be caused by menstrual disorders. There are many causes of irregular menstruation, such as endocrine disorders, abnormal ovarian function, intrauterine device placement, cervicitis, endometritis, endometriosis, uterine fibroids, pelvic inflammatory disease, etc. It is recommended to go to the gynecology department of a regular hospital within 3-7 days of menstruation to have sex hormone six, gynecological ultrasound and other related examinations to find out the cause and treat the symptoms. If necessary, you can take uterine blood to stop the bleeding. Pay attention to personal hygiene and keep the vulva clean and dry. Pay attention to menstrual hygiene and sexual hygiene. Prohibit sexual intercourse during menstruation and do not do strenuous exercise or heavy physical labor.