The causes of coarse stool are mainly seen in the following aspects: 1, dietary factors, mainly due to the consumption of food containing more slag, protein and fat, dietary fiber eating too little, resulting in the food nutrition in the intestinal tract after absorption of a large number of stool, less dietary fiber can not stimulate intestinal peristalsis, resulting in stool in the intestinal tract for too long, can lead to coarse stool. 2, intestinal reasons, mainly seen in The elderly and children, due to the weaker intestinal function, its intestinal peristalsis slower, feces in the intestinal tract for a longer period of time, will appear very coarse stool. In addition, the normal young people due to the absorption function of the intestinal tract is better, the water in the body can be absorbed by the intestinal tract, the increase in water in the stool leads to the expansion of feces in the intestine, and the phenomenon of coarse stool. 3, constipation, mainly due to various reasons caused by the reduction of water in the stool, resulting in constipation, the phenomenon of coarse stool.