Diarrhea is defined as an increase in the frequency of stools, more than 2-3 times a day, and in some patients it is accompanied by a change in the shape of the stools, such as watery diarrhea or pasty stools, as well as with some undigested food, which is presumably increased in frequency. The increased frequency of stools may be due to organic or functional lesions. As for organic lesions, on the one hand, it may be caused by systemic diseases, such as hyperthyroidism or pancreatic cancer and other systemic diseases leading to diarrhea, and on the other hand, it may be caused by diseases of the intestinal tract itself, such as inflammatory bowel disease, bacterial or viral infections of the intestinal inflammation, as well as colonic polyps, colon tumors, and other intestinal problems. If a series of tests to rule out organic diseases, functional causes can also lead to diarrhea, such as irritable bowel syndrome, the patient in eating, chili peppers, cold drinks and other stimulating diets can also appear after the increase in the number of stools, which are usually common causes of diarrhea.