There are the following reasons for coarse stools: 1, may eat a lot of coarse fiber food, such as buckwheat, sorghum, sweet potatoes, soybeans, celery, beans, apples, hawthorn, mushrooms, etc., these foods are not easily digested and absorbed by the intestines, food residues are particularly large, into the intestines will form very coarse stools. 2, may be caused by constipation, constipation, the intestines can not be discharged from the intestines in a timely manner, the stool will accumulate 3, may be caused by fire, fire will lead to dehydration, so the intestines will lack water, gastrointestinal function will be affected, gastrointestinal peristalsis will become slower, which will also lead to coarse stool. 4, long-term use of laxatives, if long-term use of senna and other drugs to help defecation, it will become dependent on these drugs, once you stop taking it can not be independent The phenomenon of coarse stool will occur when a lot of stool will accumulate at the anus.