There are many causes of avalanche, mainly related to the following factors, and the causes must be found before treatment can be carried out. First, to exclude whether it is pregnancy, some people are pregnant and then show miscarriage or fetal abortion, which manifests as bleeding, or even a lot of bleeding leading to collapse; second, related to age, some people enter the menopausal transition or called menopause, and at this stage, due to poor ovulation and insufficient estrogen and progesterone levels, and then irregular shedding of the endometrium, especially the lack of progesterone to protect the endometrium, menstruation is Third, certain organic lesions, such as submucosal fibroids or giant fibroids, adenomyosis, etc. In this case, the endometrial volume increases, the shedding volume is high, and the menstruation will appear to be disintegrating, disintegrating and anemic. Therefore, there are very many causes of avalanche, and treatment related to the different causes mentioned above is carried out. In case of pregnancy-related problems, miscarriage, especially incomplete miscarriage, clearance surgery is performed, in case of menopausal and perimenopausal leakage, curettage or hysteroscopic surgery is performed, and in case of uterine fibroids, adenomyosis, especially submucosal fibroids, hysterectomy is required if necessary. So, different causes determine different treatments for the symptoms of menorrhagia.