To explore the difference of dietary patterns and nutrient intake of obese children,in order to provide scientific evidence for the intervention of childhood obesity . Method Totally 70 children aged 7~14 with simple obesity and 70 normal children in pediatric outpatient of the Second Affiliated Hospital of Xi′an Jiaotong University were enrolled from June 2016 to June 2017.Height,weight,waist circumference,hip circumference,blood pressure and body fat percentage (BFP) were measured.Body mass index(BMI) and waist to hip ratio were calculated as well.Daily intake of total calorie,three major nutrients,micronutrients and the proportion of meals were investigated by the 24 hour meal review method of 3 days in children,and the dietary structure and nutrient intake were analyzed by Nutrition Data System (Huicheng,Shanghai). Results Compared with the control group,the total calories,the intake of protein,fat,carbohydrate,the proportion of calorific energy supplied by fat and protein,the intake of thiamine and vitamin A sodium,zinc,iron and calcium in the obese group were significantly higher than those in control group(all P<0.01).However,the proportion of calorific energy supplied by carbohydrate was significantly lower in obese group compared with the control group(P<0.01). Conclusions There is intake imbalance of three major nutrient and mineral in dietary structure of obese children.Sustained excess nutrition intake can lead to childhood obesity.When adjusting the dietary structure of obese children,it is vital to pay more attention to the proportion of minerals and vitamin intake.