Bowel obstruction patients pull out black stool does not mean well, but also need to be based on the patient’s condition and abdominal fluoroscopy and other auxiliary examination to determine, especially in the stool after the patient still exists obvious abdominal distension, abdominal pain and other symptoms, abdominal fluoroscopy also exists in the flatulence and liquid plane. In clinical cases of intestinal obstruction caused by accumulation of feces, black feces can be discharged after treatment such as enema is given. However, if the discharged feces is part of the accumulated feces, the remaining part will still block the intestinal tract, and the patient may still have abdominal pain, abdominal distension and other symptoms, indicating that the intestinal obstruction has not yet improved. For patients with high intestinal obstruction, the black stool may be the feces accumulated in the colon, and the cause of high intestinal obstruction has not been solved, so the obstruction has not improved. In addition, the black stool may also be caused by gastrointestinal bleeding, so it is necessary to further improve the examination, in order to clarify the condition, and the professional physician will give the appropriate treatment for the condition.