Objective To compare the clinical effects of emergency surgery and elective surgery for the treatment of obstructive colon cancer.Methods A total of 126 obstructive colon cancer patients were randomly divided into emergency surgery group and elective surgery group from December 2011 to December 2012 in our hospital,63 patients per group.Patients in elective surgery group were treated with elective surgery after conservative treatment and patients in emergency surgery group were treated with emergency surgery after clear diagnosis.The surgical options and postoperative complications were compared and analyzed between two groups.Results The rate of choose colon resectionⅠanastomosis in elective surgery was significant higher than that in emergency surgery(P 0.05).The rate of choose back to the anastomosis of the colon and ostomy in elective surgery was significant lower than that in emergency surgery(P 0.05).The rate of postoperative pulmonary infection,wound infection and anastomotic leakage in elective surgery was significant lower than that in emergency surgery(P 0.05).Conclusion Elective surgery had positive and practical significance for improving the clinical efficacy of patients with obstructive colon cancer,and reducing the incidence of postoperative complications.