If there is still bleeding at 9 days of menstruation, it is necessary to exclude the presence of submucosal fibroids in the uterus, endometrial polyps, cervical canal polyps, and bilateral adnexal cysts, because these factors may cause the bleeding to stop at 9 days of menstruation. It is necessary to take oral anti-inflammatory drugs and hemostatic drugs according to the situation, and observe if there is such a situation in the future as far as possible. If on the basis of these diseases is frequent, it is necessary to consider the way of surgery at this time, otherwise it will induce frequent abnormal bleeding and induce having menstrual dripping. The ring may be displaced or stimulated by an adverse reaction due to the birth control ring, which may cause a period of 9 days without being able to stop the bleeding, and an ultrasound should be done to determine whether the position of the ring is normal or not, and oral anti-inflammatory and hemostatic medication should be administered according to the situation.