There is no such thing as the best birth control ring, the birth control ring is also called intrauterine device, generally can be divided into inert intrauterine device and active intrauterine device. 1. Inert IUD: made of inert materials such as metal, silica gel, plastic, etc., such as stainless steel rings applied before, it was found that women using inert IUD, IUD dislodgement and the phenomenon of pregnancy with the ring is more and more, so it is rarely used in clinical practice at present. 2. Active intrauterine devices: copper-containing intrauterine devices mainly include “T” type, “V” type intrauterine devices, mother’s body music, Gini ring, love mother’s ring, etc. Drug-containing intrauterine devices mainly include levonorgestrel intrauterine device system and so on. The birth control ring is mainly used to achieve the role of assisted contraception through the local tissue reaction to the foreign body and affect the fertilized egg implantation, resulting in the death of sperm, egg, embryo, and so on. Doctors usually choose a suitable birth control ring according to the patient’s physical condition, uterine cavity morphology, menstrual flow, physique and other conditions, as well as the different materials and shape characteristics of the birth control ring. After the implantation of the IUD, patients are advised to undergo regular check-ups to avoid dangerous situations such as displacement and dislocation of the IUD. For details, we recommend consulting a specialized doctor.