Whether fistula is needed after sigmoid colon resection depends on the severity of the disease. If the sigmoid colon tumor is at an advanced stage, or if intestinal obstruction occurs, postoperative fistula is usually recommended; however, if the tumor is currently found early and intestinal obstruction has not yet occurred, fistula is usually not recommended. For sigmoid colon tumors with relatively late onset, intestinal obstruction is likely to occur after colon resection, in which case fistula should be done. However, if the sigmoid colon tumor is detected earlier, after resection, it is generally not easy to develop intestinal obstruction, and the patient’s prognosis is good after surgery, this situation does not need to do fistula. Sigmoid colon resection after the need for fistula, should be combined with their own situation to analyze, specifically under the guidance of a professional physician, if there is any doubt, after the operation need to consult the doctor in a timely manner.