It is most appropriate to remove the IUD 3-7 days after menstruation because the uterine lining is thinner during this period and removing the IUD will not cause more damage to the endometrium. Vaginal bleeding is less, so women should choose to remove the IUD 3-7 days after menstruation. Before removing the IUD, a routine preoperative examination should be performed to check whether there is vaginal inflammation. Ultrasound examination should also be performed to understand the position of the ring and its shape, infectious disease examination and routine blood tests. If there is no abnormality in the examination, the IUD can be removed. After the removal of the IUD, anti-inflammatory and hemostatic drugs are routinely given orally.