目的了解北京市居民2009年膳食营养状况及2002年以来的变化趋势,监测居民营养与健康状况。方法采用多阶段分层整群随机抽样的方法 ,在北京市抽取6个区205户居民进行膳食调查,计算每标准人日食物消费量,并与2002年北京市调查结果相比较。结果 2009年北京市居民每标准人日谷薯类、蔬菜类、水果类、畜禽肉类、鱼虾类、蛋类、奶类、大豆及其制品、食用油、盐的摄入量分别为379.4,495.5,188.1,99.0,16.9,53.3,121.2,20.1,39.6,10.3 g;能量摄入10293.7 KJ,蛋白质、脂肪、碳水化合物的供能比分别为13.6%,32.8%,53.6%;与2002年比较,蔬菜类、水果类、奶类摄入量明显增加,鱼虾类、食用油、盐摄入量下降;脂肪供能比下降;钙和钾摄入量增加,钠摄入量降低。结论北京市居民膳食结构有所优化,营养状况有所改善,但仍存在不利于健康的因素。 Objective To understand the status of dietary nutrition of residents in Beijing in 2009 and the changing trend since 2002, and to monitor the nutrition and health status of residents. Methods A multistage stratified cluster random sampling method was used to survey 205 households in 6 districts in Beijing to investigate food consumption per standard day and compare with the survey results in Beijing in 2002. Results In 2009, the intakes of daily potatoes, vegetables, fruits, livestock and poultry meat, fish and shrimps, eggs, milk, soybeans and their products, cooking oil and salt per standard person in Beijing were 379.4,495.5,188.1,99.0,16.9,53.3,121.2,20.1,39.6,10.3 g; energy intake of 10293.7 KJ, protein, fat, carbohydrate energy ratio were 13.6%, 32.8%, 53.6%; and 2002 In the year, the intake of vegetables, fruits and milk increased significantly, the intake of fish, shrimp, edible oil and salt decreased; the ratio of fat to energy decreased; the intake of calcium and potassium increased and the sodium intake decreased. Conclusion The dietary structure of residents in Beijing has been optimized and the nutritional status has been improved. However, there are still unfavorable factors for health.