During menstruation, women with coffee-colored menstrual blood in the latter days usually do not need to deal with it if it occurs once in a while and clears naturally. If it is persistent and dripping, it may be luteinizing insufficiency, so you need to consult a gynecologist and do a sex hormone test to confirm whether there is an endocrine disorder, and then use hormonal drugs under the guidance of the doctor for symptomatic treatment to avoid prolonged periods causing endometritis and other conditions that affect women’s health. Some women have coffee-colored menstrual blood, possibly suffering from endometritis, due to poor contractions, so that the menstrual blood stays in the uterine cavity for a longer time, the menstrual blood mixed with more endometrium and other debris, the color will easily become lighter. During women’s menstruation, if there is mental tension, work strain or anxiety, it also tends to affect endocrine secretion and make the color of menstrual blood coffee-colored.