There are the following symptoms of colonic obstruction: 1. abdominal pain, colonic obstruction will lead to continuous pain in the abdomen, acute intestinal obstruction will have strangulation pain, if there is inflammation on the colon pain will be more intense, chronic intestinal obstruction patients are dull pain in the abdomen, and will last for a period of time. 2. stop defecation, belongs to the characteristic performance of colonic obstruction, is caused by complete obstruction of the colon, but if it is incomplete obstruction or early colonic obstruction, the intestine is partially open or there is still some residual gas and stool under the obstructed colon, so a small amount of stool will be discharged. 3. vomiting, colonic obstruction, or some residual gas and stool under the obstructed colon. However, if the obstruction is incomplete or in the early stage of the obstruction, the intestine is partially open, or there is still some residual gas and stool under the obstructed colon, so a small amount of stool will be discharged. 3.Vomiting, vomiting caused by colon obstruction is reflexive, but it is not particularly obvious and does not occur very frequently. 4.Abdominal distention, abdominal distention will occur after the occurrence of colon obstruction for a period of time, and abdominal distention is caused by the gas and liquid in the intestine cannot be discharged smoothly. The abdominal distension is caused by the gas and liquid in the intestine cannot be discharged smoothly.