Patients with adenomyosis can have an IUD, but it is best to place a levonorgestrel IUD system. Adenomyosis is often caused by the endometrium growing in the myometrium, and patients often experience progressively worsening dysmenorrhea, prolonged menstrual periods, and increased menstrual flow. The levonorgestrel intrauterine system contains highly effective progesterone, which when placed inside the uterine cavity will inhibit the proliferation of the uterine lining, leading to atrophy of the uterine lining, causing a decrease in the amount of menstruation, or even amenorrhea, and at the same time, the pain symptoms can be relieved or disappeared. For patients suffering from adenomyosis, it is recommended to go to the hospital in time, under the guidance of the doctor to choose the appropriate treatment. For women who have placed levonorgestrel intrauterine device system, it is recommended to use it within the stipulated years, and after more than 5 years, it is recommended to take it out as soon as possible.