目的:了解西宁市学龄前儿童单纯性肥胖的发生情况及影响因素,提出相应的干预措施。方法:采用随机整群抽样法对西宁市城区托幼机构学龄前儿童进行体格测量、生长发育评价,同时对儿童家长进行问卷调查。结果:共抽取学龄前儿童1 842人,其中男童978人,女童864人,学龄前儿童单纯性肥胖发生率5.65%,男女童肥胖发生率分别为5.62%、5.67%,两者比较差异无统计学意义;各年龄组肥胖发生率差异有统计学意义(P<0.05),以6岁组肥胖发生率最高;肥胖程度以轻、中度肥胖为主,轻度肥胖的发生率为3.04%,中度肥胖的发生率为2.39%,重度肥胖的发生率为0.33%;儿童单纯性肥胖因素为:年龄、辅食添加时间、父体质指数、母体质指数、是否喜食蔬菜水果、食欲情况、每餐进食量、挑食否、每天看电视时间、进食速度、是否常食洋快餐及油炸食品11项。11项影响因素经Logistic多因素回归分析,结果显示影响较大的因素为年龄、父体质指数、母体质指数、是否喜食蔬菜水果、食欲情况、每餐进食量、每天看电视时间、进食速度。结论:西宁市城区学龄前儿童期单纯性肥胖症日益增多,家庭、托幼机构及社会应加强健康教育,从而使学龄前儿童养成良好的生活习惯和饮食行为,降低学龄前儿童期单纯性肥胖的发生率。 Objective: To understand the incidence and influencing factors of simple obesity among preschool children in Xining City and to put forward corresponding interventions. Methods: A random cluster sampling method was used to evaluate physical growth and development of pre-school children in kindergartens and nurseries in Xining. At the same time, children’s parents were surveyed. Results: A total of 1 842 preschool children were enrolled, including 978 boys and 864 girls, the incidence of simple obesity in preschool children was 5.65% and the incidence of obesity in boys and girls was 5.62% and 5.67%, respectively The incidence of obesity in each age group was significantly different (P <0.05). The incidence of obesity was the highest in 6-year-old group. The severity of obesity was mild and moderate obesity, and the incidence of mild obesity was 3.04% , The incidence of moderate obesity was 2.39% and the incidence of severe obesity was 0.33%. The simple obesity factors of children were: age, time of complementary feeding, paternal body mass index, maternal body mass index, whether eating fruits and vegetables, appetite, Food intake per meal, picked pick no, watching TV every day, eating speed, whether it is often eat Western fast food and fried foods 11. The 11 influential factors were analyzed by logistic regression analysis. The results showed that the most influential factors were age, paternal body mass index, maternal body mass index, whether eating fruits and vegetables, appetite, food intake per meal, TV time per day, eating speed . Conclusions: The increasing incidence of simple obesity in preschool children in Xining City, health education should be strengthened in families, nurseries and nurseries and community, so that preschool children can develop good habits and dietary behaviors and reduce the simpleness of pre-school children The incidence of obesity.