In clinical practice, it depends on the cause of the enlargement of the uterus. The effects of the enlargement of the uterus are different for different reasons. Firstly, if the uterus is inflamed due to inflammation of the uterine muscle and the uterine muscle becomes enlarged, it may lead to infertility and recurrent lower abdominal pain. Secondly, if the uterus is large, it may be clinically caused by fibroids. If the fibroids are subplasma, they often do not affect menstruation and are often found during gynecological examinations. If it is a submucosal fibroid, or a large intermuscular fibroid will lead to increased menstrual flow, clots in the menstrual blood and even infertility in clinical practice. Third, a large uterus is clinically caused by adenomyosis, which often results in severe menstrual pain and infertility in about 50% of patients.