There are many kinds of birth control rings in our country, so you must choose the one that suits your uterine cavity is the best. This kind of birth control ring is suitable for women who give birth to their second child, especially for women who give birth to their second child, because the opening of the uterus is loose after the birth, other birth control rings are easy to fall off, this birth control ring is nailed to the uterine wall, so it is not easy to fall off, so you can choose to get the ring of the Ginny series. If you have a heavy menstrual flow and painful menstruation, you can get a medicinal ring. The foreign-imported medicinal ring is called Manuelle, which is relatively expensive, costing more than 1100 yuan. In our country, there is the active gamma ring, which contains anti-inflammatory and pain-relieving ingredients in it and can stop bleeding and pain. There are also T-rings and Yuan Gong rings that are suitable for the uterine cavity. These have to go to the surgery, and the doctor will help choose a more suitable ring according to the form of the uterine cavity.