The shortness of the stool is a small cut, considering that it may be due to constipation, hemorrhoids, rectal polyps and other related reasons. 1. constipation: when defecating a cut a cut most due to constipation, when a long time without defecation, the bowel movement is slow food debris will be a lot of accumulation in the gastrointestinal tract, water will be gradually absorbed by the intestinal tract, so there will be a dry stool, a cut a cut lump phenomenon. 2. hemorrhoids: hemorrhoids are divided into internal and external hemorrhoids, internal hemorrhoids in the anus, swollen hemorrhoids will make the space inside the anus becomes narrow, when defecation will appear a cut a cut phenomenon. 3. Rectal polyps: rectal polyps occur in the end of the rectum, one or more polyps, will be discharged with the stool and stuck in the anus, stool discharge will cause short, a cut a cut phenomenon. There are many other causes of short stools, and it is recommended to go to the hospital in time to avoid aggravation of the symptoms.