Diarrhea is a common occurrence during menstruation and is related to physical changes during this special period. 1. the body’s resistance decreases during menstruation, affecting digestive function and resulting in indigestion, bloating and diarrhea. 2. the pelvic cavity is bruised during menstruation, resulting in increased gastrointestinal motility and diarrhea. 3. some women like to supplement nutrition during this period, resulting in gastrointestinal Overload, gastrointestinal function overload, diarrhea. In short, during menstruation, we should pay attention to protection, diet and living, more rest, and ensure enough sleep. Eat a light diet, avoid being too greasy, avoid eating cold food, also avoid getting cold and overworking, which affects the physical condition, and also ensure a good mood, which is also easy to change during menstruation.