The IUD is a safe, effective, simple, economical and reversible method of contraception, but if the IUD is not chosen properly, it is also prone to side effects, such as excessive menstruation and vaginal bleeding. It is best to choose the second generation of active IUDs, which contain copper ions, hormones or drugs to improve the effectiveness of contraception and reduce side effects, such as the commonly used copper IUDs, which can achieve an efficiency of more than 95%, in addition to the IUDs containing drugs, the commonly used IUDs containing anti-inflammatory pain, which can be released daily through a certain amount of anti-inflammatory pain, which can However, the specific type of IUD to be placed should be chosen according to the size and shape of each woman’s uterus.