Smaller adenomyomas rarely have obvious clinical symptoms and are usually not malignant and rarely harmful. However, patients with larger adenomyoma may suffer from dysmenorrhea, anemia, infertility and other problems, sometimes affecting the reproductive function and causing infertility, usually without the risk of malignancy. The hazards of adenomyoma are as follows: 1. Dysmenorrhea: adenomyoma can cause increased uterine tension, which causes spasmodic contraction of uterine smooth muscle, leading to dysmenorrhea. The pain is usually located in the middle of the lower abdomen and usually starts 1 week before menstruation until the end of menstruation. 2. Anemia: Patients with adenomyoma may show increased menstrual flow for several months in a row due to the enlargement of the uterine cavity, and the menstrual flow is usually more than 80 ml. The excessive menstrual flow and prolonged periods may lead to excessive blood loss, which may lead to anemia. 3. For adenomyoma with less obvious symptoms, surgery is usually not required, but can be followed up and observed, and treated with short-acting oral contraceptives, prostaglandin inhibitors, and mifepristone under the guidance of a medical professional. For symptomatic adenomyoma, adenomyoma removal or total hysterectomy may be an option.