【摘要】 目的 探討使用營養風險篩查（nutritional risk screening，NRS）2002與生理生化指標聯合評估大腸癌患者術前營養及二者的定量關系。 方法 對2008年4月-2009年3月收治的367例大腸癌患者，用NRS 2002與生理生化指標分別評估其術前營養風險和營養狀況，對其進行相關性分析。 結果 有28%的大腸癌患者術前即存在營養風險，各評價指標對營養不良狀況的檢出率存在差異（9.3%～31.6%），且NRS 2002營養風險評分與血紅蛋白（r=-0.117，P=0.025）、血清前白蛋白（r=-0.205，P=0.046）、血清白蛋白（r=-0.175，P=00.001）、體量質指數（r=-0.231，P=0.000）均呈負相關。 結論 大腸癌患者術前即存在較高的營養風險和營養不良，且營養風險與術前營養狀況有關。【Abstract】 Objective To assess the preoperative nutritional risks and status of patients with colorectal cancer by nutritional risk screening 2002 (NRS 2002) combined with physiological-biochemical indicators, and explore their quantitative relationship. Methods NRS 2002 combined with physiological-biochemical indicators were applied on the 367 patients with colorectal cancer in Gastrointestinal Surgery Center in West China Hospital between April 2008 and March 2009 to assess their nutritional risks and status, and correlation analysis was done to explore their quantitative relationship. Results Among all the patients, 28% had preoperative nutritional risks. Different physiological-biochemical indicators detected different rates of malnutrition (9.3% to 31.6%), and there was a negative correlation between NRS 2002 and such physiological-biochemical indicators as hemoglobin (r=-0.117,P=0.025), pre-albumin (r=-0.205,P=0.046), albumin (r=-0.175,P=0.001), and body mass index (r=-0.231,P=0.000). Conclusion Many colorectal cancer patients have preoperative nutritional risks and malnurtrion, and the nutritional risks are correlated with preoperative nutritional status.