Pre-menopausal menstrual flow instead of increasing may be caused by the decline of ovarian function, but it may also be caused by diseases such as endometrial polyps and uterine fibroids. As women continue to age, ovarian function will gradually decline, and sex hormone levels will gradually decrease, causing women to enter perimenopause. At this time, women may experience menstrual changes, such as a decrease in the amount of menstrual flow, shortening of the time of menstruation, and a longer interval between menstrual periods until menopause occurs. However, women may also experience increased menstrual flow, shorter intervals between periods, and irregular bleeding until menopause, accompanied by flushing, irritability, and excessive sweating. Increased menstrual flow before menopause may also be caused by pathologic factors, such as endometrial polyps, fibroids, etc., which may be accompanied by abnormal vaginal discharge, lower abdominal pain and other discomforts. It is recommended that the patient go to the hospital in time, complete the relevant examinations, and take targeted treatment according to the doctor’s instructions.