Objective To study the clinical characteristics in elderly patients with colorectal carcinoma.Methods The clinical dafa of 76 cases of more than 70 years old with colorectal carcinoma were analyzed retrospectively. Results Among 76 elderly patients with colorectal carcinoma,64 cases( 84.2% ) suffered from common diseases in the elderly, such as hypertension, cardiac disease, diabetes ,lung of chronic disease et al. 27 patients had postoperative complications, and 3cases of them died from complications. The rate of postoperative complications in the elderly who had coexistent diseases was 39.1%. Conclusion The elderly patients with colorectal carcinoma frequently had blood hypertension. cardiac disease, diabetes. Strengthening the management of perioperation could improve the security of the operation and decrease the postoperative complications.