The main manifestations of adenomyosis are progressive dysmenorrhea, painful intercourse, recurrent chronic pelvic pain, infertility in women of childbearing age, and anemia secondary to increased menstrual flow. The Manned Ring is rich in highly effective synthetic progestin, levonorgestrel, which can be placed in the uterine cavity to release progestin locally to promote endometrial atrophy, reduce bleeding and relieve dysmenorrhea, and can be used in the treatment of adenomyosis. There are many risk factors for adenomyosis, with the effects of high estrogen accounting for the main cause. Ultrasound in ancillary tests usually indicates a spherically enlarged uterus and abnormally elevated CA125. Adenomyosis without symptoms can be followed up and observed, but once symptoms appear, active intervention is recommended. If the effect of treatment with Mannedol is not satisfactory, or if the uterus is abnormally enlarged and unsuitable for IUD, a comprehensive analysis of the patient’s age, the amount of menstrual blood and the degree of anemia, the severity of dysmenorrhea, etc., can be performed wedge resection of the uterus if necessary, only complete removal of the uterus will completely reduce the symptoms, otherwise there will be a risk of recurrence. In conclusion, patients with mild symptoms can choose to take the Manned Ring or oral short-acting contraceptive pills for adenomyosis, while surgery is recommended for those with severe symptoms and those without fertility requirements.