【摘要】 目的 探讨使用营养风险筛查（nutritional risk screening，NRS）2002与生理生化指标联合评估大肠癌患者术前营养及二者的定量关系。 方法 对2008年4月-2009年3月收治的367例大肠癌患者，用NRS 2002与生理生化指标分别评估其术前营养风险和营养状况，对其进行相关性分析。 结果 有28%的大肠癌患者术前即存在营养风险，各评价指标对营养不良状况的检出率存在差异（9.3%～31.6%），且NRS 2002营养风险评分与血红蛋白（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）、体量质指数（r=-0.231，P=0.000）均呈负相关。 结论 大肠癌患者术前即存在较高的营养风险和营养不良，且营养风险与术前营养状况有关。【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.