There are many types of birth control rings, mainly metal type and drug type birth control rings, each has its own advantages and disadvantages, and the one that suits you is the best. The metal type of IUD damages the sperm by releasing metal ions, making it inactive and unable to combine with the egg smoothly. If you want to have children again, you can have your fertility restored by removing the IUD. Drug-based IUDs prevent the growth and development of eggs by secreting hormonal drugs to achieve contraception. The slow release of drugs can also regulate the thickness of the uterine lining, regularize menstruation, and regulate the amount of menstruation. Women need to listen to their clinician’s advice when choosing an IUD, and the doctor will choose the most suitable IUD according to the woman’s own situation.