Clinically, there are also individual differences, some women have no symptoms during menstruation, and some women have loose stools and stomach pain during menstruation. This is due to hormonal changes in the body during menstruation, such as the decline in estrogen and progesterone, which can cause pelvic congestion and affect the intestines. In addition, the secretion of prostaglandins increases during menstruation, prostaglandins may enhance the digestive system, gastrointestinal peristalsis, causing hyperfunctioning of the digestive system, diarrhea, diarrhea. Diarrhea during menstruation is generally mild symptoms, adjusted by eating easily digestible food, do not eat cold food, if more serious need treatment. In Traditional Chinese Medicine (TCM) specifically there is this disease, recorded as menstrual diarrhea. Most menstrual diarrhea is usually caused by kidney or spleen deficiency, and can be treated with Chinese medicine at the hospital or clinic, depending on the specific situation. In the clinical outpatient clinic there are very many patients with premenstrual syndrome, i.e. diarrhea, dysmenorrhea, etc., which are treated with medication with very good results. However, there are patients with premenstrual diarrhea, if the number of bowel movements is particularly high, stomach pain is more serious, be alert to gastrointestinal diseases, such as dysentery, enteritis, etc., need to hospitals to do routine stools, urinalysis diagnostic tests, to rule out intestinal diseases, can not be careless.