Only after the cause of heavy menstruation is clarified can the specific treatment be determined. The common clinical causes of heavy menstruation are as follows: 1. Endometrial inflammation or endometrial hyperplasia: first of all, ultrasound is needed to assess the thickness of the endometrium, and also to observe the echogenicity of the endometrium. If the endometrium is thicker, or if there is a clear indication of endometrial polyps, hysteroscopic endometrial polyp electrolysis is needed, and the menstrual flow can be significantly improved after treatment; 2, uterine fibroids or adenomyosis: surgical treatment is needed, including the removal of uterine fibroids or the removal of localized foci of adenomyosis; 3, endocrine diseases or rheumatologic and immune disorders: for instance, thyroid diseases or systemic erythrocyanosis. Endocrine system diseases or rheumatic immune system diseases: such as thyroid disease or systemic lupus erythematosus, may lead to heavy menstruation, and need to be treated accordingly.