Generally speaking, if a fertile woman needs contraception and there are no contraindications in her body, an IUD is usually preferable, whereas if a woman has contraindications in her body, an IUD is not recommended. The IUD is a relatively common contraceptive measure that is safe, simple, effective and reversible. Generally speaking, if a woman is in her childbearing age, has a normal sex life, if she has no intention of having children, and her body has no contraindications, she can consider wearing an IUD for contraception. However, if there are contraindications, such as acute vaginitis and acute cervicitis and other acute inflammation of the reproductive system, it is not recommended to wear an IUD to avoid retrograde infection of pathogens, which can cause endometritis and pelvic inflammatory disease. It is also not suitable for women who experience prolonged discomfort after using the IUD, such as vaginal bleeding or abdominal pain. If a woman intends to use the IUD as a contraceptive, it is recommended that she go to the relevant department of a regular hospital to have it done, so that her safety can be guaranteed. She should also take good care of herself after using the IUD, for example, she should not have sex for two weeks, and she should pay attention to her personal hygiene. If there are abnormal symptoms after the IUD, it is recommended to go to the hospital actively.