IUD is considered a surgical procedure. IUD belongs to gynecological minor surgery, also need to perfect the preoperative examination, after the operation pay attention to rest. Generally, before the IUD surgery, it is required that the menstruation is clean for 3-7 days, and no coitus is allowed before the surgery, and it is necessary to perfect the routine examination of vaginal secretions to ensure that the examination results are normal before the surgery. If the secretion routine suggests the presence of inflammation, generally have to treat the inflammation first, and only after the cure can consider the IUD. IUD surgery also involves certain risks, such as increased menstrual flow in some women after the operation, and even ring embedded, pregnancy with the ring, etc. It is recommended to have coitus for two weeks after the operation to prevent infection. After the next menstrual period, go to the hospital for a follow-up ultrasound to see if the ring position is normal, and then review the ultrasound every six months or once a year.