Abstract: [Abstract] Objective To discuss the clinical efficacy between colonoscopic metal stenting and ileus tube catheterization in the therapy for left colorectal cancer with acute obstruction. Methods Clinical data of 80 cases applied metal stents and ileus tube to treat with left colonic cancer of our hospital from august,2011 to december,2013 was retrospectively analyzed.The 80 cases who met the diagnostic criteria were devided into metal stent group (40 cases) and ileus tube group (40 cases). The two groups were carried on by colonoscopy and X- line. The metal stent group were treated by metal stent and the ileus tube group were treated by ileus tube. After obstruction disappear (7~10d), two treatment groups were all implemented colorectal cancer radicalresection and anastomosis.To compare the technical operation, improvement of obstruction and effect of surgical treatment. Results Technical comparison in two groups , The success rate of the metal stent group was 87.5%, the success rate of ileus tube group was 97.5%，P>0.05.Both of two groups did not appear developed complications.But the operation time and cost of metal stent group were more than ileus tube group. Obstruction relief in two groups, Obstruction of remission rate of metal stent group was 100%,the other group was 95%，P>0.05,while 2 cases in ileus tube group were emergency operated because of failure of obstruction relief.Besides, both the time of obstruction ease and the difference between c - reactive protein of metal stent group were superior to ileus tube group. After obstruction disappear, two treatment groups were all implemented colorectal cancer radicalresection and anastomosis, both of two groups did not appear anastomotic leakage,and there were not difference in operative time, infection rate and hospitalization time. Conclusion Both of two methods can treat with left colonic cancer safely and effectively,be implemented colorectal cancer radicalresection and anastomosis,and reduce the incidence of perioperative complications.But in Health Economics ,the ileus tube is better ,while in obstruction relief aspect, the metal stent is better. [key words] metal stent；the anal ileus tube catheterization；left colorectal cancer；acute obstruction

Key words: metal stent, the anal ileus tube catheterization, left colorectal cancer, acute obstruction