The first is the combination of meat and vegetables in the diet, and it is best to eat more food rich in dietary fiber, once the diet often eat some meat food, and reduce dietary fiber food, the stimulation of the intestines will be reduced accordingly, these people will form pellets when defecating. 2, irritable bowel syndrome has a variety of manifestations, mainly slow intestinal peristalsis, these people in defecation will not only be accompanied by defecation difficulties, and because the stool in the intestinal tract is over-absorbed water, so the stool will be dry, and even form granules. 3, many people in ordinary times do not pay attention to exercise, will be sedentary for a long time, this habit will lead to intestinal peristalsis Once constipation is formed, it is not only difficult to defecate, but also the feces will be in the form of one. 4, when the intestine is suffering from tumor diseases, it will affect the function of the intestine, and lead to changes in bowel habits, part of the patients is to reduce the number of bowel movements, fecal pellets.