本文用病例一对照研究对75例肥胖儿童及对照进行了致肥胖因素的调查，所得资料用条件Logistic回归分析，发现6－12岁时食欲、每日饭量对儿童肥胖的影响最大，其次是吃饭速度和母乳喂养时间，在单因素分析中，肥胖儿与对照的差异有显著意义的因素还有父母是否超重、对荤食、零食的嗜好、3－6岁时食欲、家庭人均收入、父亲文化程度。以上结果提示，导致儿童肥胖的因素主要是饮食，表现为饭量大、食欲好、进食速度快及对荤食零食的嗜好，其次是母乳喂养和父母超重。家庭经济收入、家长文化程度等对肥胖发生也有一定影响。 In this paper, a case-control study of 75 cases of obese children and the control of the cause of obesity, the information obtained by conditional Logistic regression analysis found that 6-12 years old appetite, daily appetite on children’s obesity the greatest impact, followed by eating Speed ​​and breastfeeding time, in univariate analysis, there are significant differences between obese children and control whether parents are overweight, hobby to meat or snacks, appetite at 3-6 years, per capita income of family, father’s culture degree. The above results suggest that the main factors leading to childhood obesity are diet, showing large appetite, good appetite, fast food intake and hobbies on meat snacks, followed by breastfeeding and overweight parents. Family income, parental education, etc. also have a certain impact on the incidence of obesity.