Small abdominal distension, want to poop, can not pull out, mainly for the following reasons: 1, intestinal obstruction: intestinal obstruction is due to intestinal dysfunction, the formation of intestinal distortion, blockage, so intestinal obstruction in addition to abdominal pain, there can not defecate, no exhaust this phenomenon. This disease is caused by the disorder of intestinal function, a large amount of gas in the intestine can not be discharged and cause abdominal pain, can not be discharged stool phenomenon, through the abdominal examination can make a clear diagnosis. 3, small abdominal distension and pain: may also be caused by intestinal spasm, also need to pay attention to.