The normal menstrual period for women is 3-7 days and the volume of menstruation is 30-80 ml. It is not normal for menstruation to end in 2 days and is considered to be menstrual disorder. The main reasons are: a. Endocrine disorders, mainly due to insufficient secretion of estrogen, endometrial hyperplasia does not reach the necessary thickness, resulting in low menstrual volume and short periods. Life is affected by the secretion of estrogen due to stressful work life, irregular work and rest, smoking and drinking. Second, poor ovarian corpus luteum function, ovarian corpus luteum function decline leads to a decline in ovarian function, insufficient secretion of estrogen directly affects menstruation, resulting in low menstrual volume or short menstruation time, and in serious cases, can lead to amenorrhea. Third, the body is thin and weak, women’s menstruation and weight, fat content, if excessive dieting caused by malnutrition, weakness, will lead to low menstruation. Fourth, abortion is too frequent, multiple abortions can lead to endometrial damage, thinning, prolonging the menstrual cycle and reducing the menstrual volume.