The process of putting the IUD in includes preoperative examination, sterilization and cervical dilatation, insertion of the birth control device, and withdrawal of the IUD. 1. Pre-operative examination: The IUD should be inserted within 3-7 days after the woman’s menstruation has been completely cleared, during which time sexual intercourse should be avoided and pregnancy should be ruled out before the IUD is inserted. 2. Sterilization and cervical dilatation: the patient takes the position of bladder stone position, disinfects the vulva before placing the vaginal speculum, exposes the cervix and then disinfects the cervix, usually more than three times. 3. Inserting the IUD: clamp the cervix with cervical forceps, probe the depth of the uterine cavity with a probe, and then use the probe to gradually widen the cervix, and use the IUD to send the IUD into the bottom of the uterine cavity from the dilated cervix. 4. Withdrawal of the IUD: the IUD without a tail wire is withdrawn directly from the IUD, and the IUD with a tail wire is cut at the cervical opening, usually leaving 0.5-1cm or so, and then withdrawn from the IUD. It is recommended to go to a regular hospital to put on the contraceptive ring, pay attention to rest after putting on the ring, and avoid overwork within two weeks.