Dysfunctional uterine bleeding refers to bleeding due to abnormal menstrual cycle or volume in the absence of pregnancy, reproductive system tumor, inflammation, trauma, or systemic bleeding disorders, etc. It is caused by the imbalance of sex hormone secretion function. When the secretion function is adjusted and restored, the bleeding stops and the menstrual cycle can return to normal. Menopause is a transitional period caused by the dysfunction of the hypothalamus-pituitary-ovary intercontrol caused by ovarian decline. First, the amount of follicular secretion from the ovaries is not sufficient to suppress hypothalamic function and the amount of follicle stimulating hormone required by the pituitary gland, and the hypothalamus is unable to secrete sufficient luteinizing hormone releasing factor, thus the pituitary gland does not produce enough luteinizing hormone to reach the peak of the wave, which is not sufficient to bring the follicles from maturation to ovulation. Excessive follicle stimulating hormone causes follicles to enlarge and form follicular cysts, which do not transform into mature follicles and increase the number of atretic follicles that die midway; they also secrete small amounts of estrogen. These estrogens accumulate and continue to act on the endometrium, causing the endometrium to proliferate excessively, but there is no post-ovulatory corpus luteum and no luteinizing hormone formation, so that the proliferative endometrium cannot be transformed into the secretory endometrium. As a result, the endometrium does not shed all the endometrium periodically and naturally, and thus cannot form a self-controlled menstrual process. The hyperplastic endometrium is affected by excessive estrogen and is often partially shed irregularly, resulting in irregular bleeding. Since not all of the endometrium is shed, the endometrium lacks a regular renewal process, so menstruation sometimes lasts for months; sometimes it is amenorrheic for a period of time and then bleeds profusely; more often, after a considerable period of time, a follicle by chance reaches ovulation by maturity, so the endometrium can be shed naturally and a normal menstruation is formed, when the volume of menstruation is often higher. Of course this chance of ovulation becomes less and less frequent, and menstruation becomes thinner and thinner, and finally stops and menopause occurs.