The vast majority of patients with adenomyosis affect pregnancy because adenomyosis is a clinical condition caused primarily by the implantation of active endometrial cells in the myometrium. The ectopic lesions implanted in the myometrium may cause cyclic bleeding with the menstrual cycle, which clinically leads to more severe dysmenorrhea and increased menstrual flow. It causes infertility in about 50% of patients, so for patients with adenomyosis who are planning to get pregnant, it is recommended that they can be treated with a Manned IUD. The main purpose of the IUD is to shrink the endometrium and to shrink the ectopic lesions, thus achieving the goal of treatment. After removing the IUD for about 2-3 years, it is recommended to prepare for pregnancy immediately, which can clinically increase the chance of pregnancy.