The stool is lumpy, mainly consider the following causes: 1, insufficient water intake: long time without water, or drink less water, food is not easily digested in the intestine, and because of the lack of water, dry, dry stool is lumpy or dry granular, resulting in constipation. 2, irritable bowel syndrome: in the diet, environment, emotions and other aspects of the stimulus, diarrhea, alternating diarrhea and constipation, abdominal pain and other functional 3, pregnancy: high intra-abdominal pressure, intestinal tube pressure, poor defecation, the stool will also be lumpy. 4, other causes: suffering from hemorrhoids, anal fissures, anal fistula or prolapse and other diseases, because of the fear of painful defecation, resulting in feces can not be discharged in a timely manner, will also solve lumpy stool.