The birth control ring is divided into levonorgestrel intrauterine slow-release system, ordinary metal birth control ring, Ginny ring, according to their own situation, need to follow the doctor’s advice to choose the right birth control ring. 1. Levonorgestrel Intrauterine Sustained Release System (IUSS): a type of IUD, which mainly contains progesterone in a slow-release system to achieve contraception through the slow release of progesterone. 2. Ordinary metal birth control ring: generally used is a copper birth control ring, there is a spermicidal effect, so as to achieve the effect of contraception. 3. Genie ring: It is a very soft one with a low chance of detachment, and contains indomethacin, thus playing a role in contraception. After placing the IUD, women need to go to the hospital for regular checkups to avoid displacement of the IUD, which can lead to unwanted pregnancy, and the IUD needs to be removed at the right time. For more information, please consult your doctor.