Depending on the material and model of the birth control ring, the validity period ranges from 3 to 20 years. The birth control ring is the intrauterine device (IUD), which is mainly used in China at present, and contains active substances such as copper ions and hormone drugs. Copper-containing IUDs are the most widely used, such as the T-type IUD with copper, which can generally be placed for 5 to 7 years, and the copper-containing set can be placed for 10 to 15 years. The copper IUD can be placed for about 20 years. Drug-containing IUDs store medication inside the device and release it in tiny amounts to achieve contraceptive effect. Levonorgestrel IUD, can be placed for 3-5 years. The life span of the IUD is determined by the type of ring. It is recommended to seek medical advice and choose the right IUD under the guidance of your doctor.