Women with dark menstruation can drink motherwort granules because they have the function of invigorating blood stasis and regulating menstruation, and can be used to treat menstrual cramps and dark menstruation. The black menstruation of women is caused by coldness in the uterus or poor discharge of blood from the uterine cavity, and motherwort granules can activate blood circulation and promote timely discharge of menstrual blood. During the period of taking motherwort granules, it is forbidden to eat cold, spicy and stimulating food, and pregnant women are forbidden to take motherwort granules. During menstruation, women should pay attention to keeping warm, keep their vulva clean and hygienic, change sanitary pads regularly, do proper physical exercise, pay attention to the regularity of work and rest time, and keep a happy mood.