Excessive menstrual flow is not a good thing. Normal menstrual flow is 20-60 ml, and more than 80 ml is considered excessive menstruation, which is a sign of abnormal menstruation. Diseases such as endometrial polyps, submucous fibroids, adenomyosis, atypical hyperplasia of the endometrium, and even endometrial cancer can lead to increased menstrual flow. Normal menstrual flow is 20~60 ml, and menstrual flow exceeding 80 ml is regarded as excessive menstrual flow. Excessive menstrual flow can lead to secondary anemia, decreased immunity, fatigue, dizziness, panic, chest tightness and other discomforts in women, so it is not a good thing to have excessive menstrual flow. When women experience increased menstrual flow, accompanied by blood clots, dysmenorrhea and other discomforts, they should consult the gynecology clinic in a timely manner to rule out organic pathology, check for anemia, and treat any abnormality in a timely manner.