Adenomyosis is generally referred to as adenomyosis of the uterus. The use of the Manned Ring for the treatment of adenomyosis is still effective, relieving discomfort, with a high safety profile and a consistent and stable therapeutic effect. There is no curative medicine for adenomyosis, but the symptoms can be relieved with medication, but can reappear after stopping. The Mannorrhea ring is a T-shaped birth control ring containing a large amount of levonorgestrel, a progestin-like drug, which can be placed in the uterine cavity to release progestin to the endometrium quantitatively and slowly, thus playing a therapeutic role, and the effect can usually be maintained for about 5 years. The main clinical manifestations of adenomyosis are excessive menstrual flow, prolonged periods and progressive dysmenorrhea that gradually worsens. The causes of excessive menstruation are mainly the increase in the endometrial area and the hyperplasia of the fibers of the uterine muscular layer causing poor contraction of the uterine muscular layer and hyperplasia of the endometrium. The levonorgestrel released by the Mannorrhea Ring can directly induce the endometrial lining to shrink, reducing the menstrual flow and slowing down dysmenorrhea, avoiding the endometrial bleeding. Studies have shown that the IUD is more effective in the treatment of adenomyosis in patients with small uterine size. Patients should be aware that a small amount of vaginal bleeding may occur after the IUD, and some patients may experience dislodgement and downward movement of the ring, which should be reviewed at 1 month to check for any abnormalities. The amount of menstruation may be significantly reduced after IUD, and some patients may experience menopause, but it has no adverse effect on the ovaries and usually does not require treatment.