Diarrhea during menstruation can be treated with medicines such as montelukast, rectus of intestines, or si mou tang. Diarrhea during menstruation may be related to poor body quality due to coldness, diarrhea caused by bacterial and viral infections, or diarrhea caused by eating cold or spoiled food, after taking medicines to treat the condition. If the condition does not improve, it is recommended to go to the hospital to do blood routine, stool routine and other tests to find out what causes, and then for the cause of the treatment. Women must pay attention to keep their abdomen warm during menstruation, do not get cold, eat more warm food, avoid eating cold, spicy and stimulating food.