The Mannix ring is excellent for the treatment of adenomyosis. Because adenomyosis belongs to endogenous endometriosis, the ectopic endometrium will be in the myometrium with the ovarian cycle and bleeding occurs. And after Mannuelle into the uterine cavity, mainly can lead to endometrial atrophy, endometrial atrophy will reduce menstrual flow, menstrual flow after the reduction of ectopic in the myometrium of the endometrial tissue will also atrophy, the bleeding slowly reduce, after Mannuelle on the majority after about a year will appear menopause, the adenomyosis of the uterus ectopic foci will also appear atrophic, so as to achieve the purpose of treatment.