There are several reasons for diarrhea during menstruation: 1. Consider the changes in hormone levels during menstruation to stimulate the body, pelvic congestion during menstruation, endometrial shedding and bleeding, women’s body resistance is weak, which may affect women’s gastrointestinal function, resulting in diarrhea. 2. 3, may be caused by cold stimulation of the abdomen, during the onset of menstruation if you do not pay attention to abdominal warmth, may lead to cold invasion will affect their bodies, diarrhea and other symptoms. It is recommended to rest more after these situations, drink warm water appropriately, and if the diarrhea is not too serious, you can temporarily do not need to treat it.