The IUD is useful for adenomyosis and, in particular, the application of the Mannheimer’s ring for adenomyosis will have a certain inhibitory effect on the development of adenomyosis. Specifically, it can reduce the amount of menstruation, further reduce the size of the uterus, and relieve menstrual cramps. Especially for patients with heavy menstrual flow, there is a significant reduction in the amount of menstrual flow after the application of MENUELA CIRCLE. However, during this process, there may be a small amount of continuous vaginal bleeding, which must be clarified by the patient before application. At the same time, after the application of the Mannuelle ring, the ring may fall off due to the large uterine cavity, which is a failure of the application of the ring. If conservative treatment, IUD or other medications fail, it is necessary to consider the possibility of the need for surgical treatment.