The contraceptive ring, also known as an intrauterine device (IUD), is replaced at different times depending on the material and shape of the ring. After the IUD is placed, if a woman feels significantly uncomfortable, the IUD will need to be removed or replaced, or the IUD can be removed if there is a planned pregnancy. Different materials and shapes of the contraceptive ring is different, the specific replacement time is as follows: 1, steel contraceptive ring: this material of the contraceptive ring, the contraceptive effect and the use of better comfort, generally can be stored for about 15-20 years; 2, copper contraceptive ring: this material of the contraceptive ring can be used for about 3-5 years, the expiration of the replacement; 3, plastic contraceptive ring: plastic contraceptive ring is more common, its important components are Plastic, the validity period is generally about 3 years, about 3 years need to be replaced once; 4, Emu contraceptive ring: this structure of the contraceptive ring can comply with the shape of the uterus, can be in the body’s normal body temperature to maintain a better shape, corrosion resistance, not easy to fall off, about 10 years to replace once; 5, T-shaped contraceptive ring: T-shaped ring in order to facilitate inspection and take the ring, generally will leave the tail wire, may also be cut, its validity In 8-10 years, the expiration of the replacement can be; 6, O-ring: O-ring placement time of about 10 years, the expiration of the need for timely replacement, so as not to occur embedded.