At present, there are more types of birth control rings, such as round ring, IUD, memory ring, IUD, Gini ring, Zimmer ring and so on. Relatively speaking, the birth control ring with better contraceptive effect is the memory ring and the IUD, the contraceptive effect can be as high as 99.6% in clinical practice, and the relative side effects are relatively small and relatively cheap, so you can choose according to your own situation, the best birth control ring after 3-7 days of menstruation and no intercourse. In addition, after the birth control ring must be regularly reviewed, and then the good birth control ring may appear off the ring, displacement phenomenon, so after the ring should be done every year to check the position of the birth control ring. Once an abnormality is found, you can replace the IUD with a new one if you want to continue using contraception.