IUDs are beneficial to women, generally have fewer side effects and do not adversely affect the body, and their main function is to act as a contraceptive. If a woman is in her childbearing age and has a normal sex life, it is easy to have an unwanted pregnancy without using the contraceptive measure of IUD, which will cause unfavorable health to the woman’s body. It may lead to the occurrence of thinning of the uterine lining, uterine adhesions, pelvic inflammatory disease, etc. In serious cases, it may also lead to an increased chance of women experiencing menstrual disorders and infertility in the future. It is better for women to use contraceptive measures, such as penile condom or placement of intrauterine device, and tubal ligation surgery. And since women who want to get pregnant again after the IUD is placed can prepare for pregnancy after it is removed, and it does not adversely affect the body, it is a form of contraception commonly used by women in China.