Eat sweet potato stool four times is a normal physiological phenomenon, in the food metabolism will improve. Sweet potato is usually a more common food, this food is rich in nutritional value, but also contains a large amount of starch and dietary fiber. Starchy food will be abnormal fermentation after entering the intestine, so it will lead to excessive gas production in the intestines, these gases will stimulate intestinal peristalsis, resulting in faster intestinal peristalsis. Sweet potatoes in the fiber in the intestines after entering the intestine can not be absorbed by the intestines, but also stimulate intestinal peristalsis speed up, so it can make the intestinal food residues quickly out of the body, many people in the sweet potatoes eat more will therefore lead to intestinal bowel movements to speed up the function, and even some people will stool four times a day. Eat sweet potato stool four times is a normal physiological phenomenon, in the sweet potato is metabolized by the body after this situation will be reduced. But in eating sweet potatoes need to pay attention to, it is best not to eat too much at once and should eat in moderation.