目的　了解我国城市儿童少年家庭中食物购买及其影响因素 ,为制订营养教育策略提供科学依据。　方法　采用三阶段分层随机整群抽样的方法从广州、上海、济南和哈尔滨 4城市随机抽取学龄前儿童的和中小学生的家长 9464名作为调查对象 ,使用问卷调查的方法 ,收集这些家庭中食物购买及影响因素方面的信息。　结果　城市儿童少年家庭中 ,69.8%的母亲总是或经常负责食物的购买 ,2 6.3 %的父亲总是或经常负责食物的购买。食物的新鲜度、卫生、营养和孩子的好恶等是城市家庭购买食物时考虑的主要因素。 2 0 .7%的城市儿童少年经常要求家长购买某种食物 ,49.9%的家长在购买食物时参考孩子的意见。　结论　城市儿童少年家庭的食物购买主要由母亲负责 ,儿童少年的要求或意见对家庭食物购买有一定的影响 ,应加强对家长和儿童少年进行食物和营养知识的教育 ,提高他们合理选择和搭配食物的能力 Objective To understand the food purchase and its influencing factors in urban juvenile families in China and provide a scientific basis for formulating nutritional education strategies. Methods A total of 9464 parents of preschoolers and primary and secondary students were randomly selected from three cities in Guangzhou, Shanghai, Jinan and Harbin using the three-stage stratified random cluster sampling method. The questionnaires were used to collect the food in these families Information on buying and influencing factors. Results Of the urban juvenile homes, 69.8% of the mothers were always or often responsible for food purchases, and 6.3% of fathers were always or often responsible for the purchase of food. The freshness of the food, hygiene, nutrition and the child’s likes and dislikes are the main factors considered by urban households when buying food. 20.7% of urban children and adolescents often require parents to buy some food, while 49.9% of parents refer to children’s opinions when buying food. Conclusion The purchase of food by urban children and adolescents is mainly the responsibility of mothers. The requirements or opinions of children and adolescents have an impact on household food purchases. They should educate their parents and children and adolescents about food and nutrition so that they can make rational choices and match food Ability