近二十余年来,由于外科技术的不断提高,吻合器及双吻合技术的广泛应用,我国保肛手术的比例明显增加。但是如果不严格掌握其适应证,易导致术后局部复发。文献报道术后局部复发率为 5% ~20%,是影响直肠癌术后生存率的重要原因之一。所以研究术后局部复发形式,分析其原因,进而 In the recent twenty years, due to the continuous improvement of surgical technique and the wide application of stapler and double anastomosis techniques, the proportion of anus-preserving surgery in our country increased significantly. However, if not strictly control their indications, easily lead to local recurrence. Reported in the literature local recurrence rate of 5% to 20%, is one of the important reasons affecting postoperative survival rate of rectal cancer. Therefore, the study of postoperative local recurrence form, analyze its causes, and then