A normal woman’s uterus is shaped like an inverted pear. If the uterus is as big as two months old in the absence of pregnancy consider adenomyosis, such as uterine adenomyoma. Adenomyosis refers to the invasion of endometrial glands and mesenchyme into the myometrium. It is more common in women of childbearing age, and more than half of the patients will be accompanied by fibroids, which may be due to the damage of the endometrial myometrium caused by multiple pregnancies and deliveries, induced abortions, and chronic endometritis. This disease often grows diffusely in the myometrium, and when patients undergo gynecological examination, they will often find that the uterus is uniformly enlarged, and the degree of enlargement will not exceed the size of the twelfth week of pregnancy, or there will be localized nodules protruding and so on, and the patients will often have increased menstrual flow, prolonged menstrual period, and gradually aggravated progressive dysmenorrhea one week before the menstruation, and the symptoms will disappear after menstruation is over. The treatment of this disease requires a doctor’s attention to the patient’s specific situation, combined with the indicators of the examination, to formulate an individualized treatment plan.