If by chance there is a slight darkening of the menstrual color, there is nothing too wrong with it, it is likely to be caused by external environmental influences, such as strenuous exercise, exposure to cold, and significant changes in mood may cause this result. The normal color of a woman’s menstruation should be dark red, and if the endometrial shedding caused by external environmental influences is not smooth, it is very easy to cause menstrual color darkening. Therefore, if it occurs by chance, you can promote the shedding of uterine lining during menstruation by using motherwort granules, which can effectively improve the symptom of dark-colored menstruation or unsmooth discharge. However, if the color of menstruation is obviously dark every time, it belongs to the problem of endometrium, and it is necessary to check the thickness of endometrium through ultrasound, and according to the results of the examination, it can be restored to normal with appropriate regulation.