The size of the incision for intestinal obstruction surgery should be decided according to the surgical method, such as open surgery, usually about 15cm~20cm, and minimally invasive surgery, usually about 4cm~5cm. 1. Open surgery: if the intestinal obstruction leads to serious intestinal adhesion, need to release the adhesion, and the abdominal infection is more serious, it is necessary to perform open surgery, in this case, the incision will be larger, about 15cm~20cm, and the specific details should be combined with the intestinal obstruction caused by the seriousness of the complications and decide. 2. Minimally invasive surgery: If the intestinal obstruction is mild and there is no serious complication, minimally invasive surgery can be performed, usually 4 puncture holes are made for the abdomen, but when fistula is needed, a 4cm~5cm incision should be made to take the intestinal tube out of the fistula. It should be noted that, intestinal obstruction surgery to open how big the wound needs to be combined with the severity of intestinal obstruction, under the guidance of the doctor, under the operation of the treatment.