The objective of this study was to investigate the effects of a nutritional education and physical exercise program on obese children (47 boys and 36 girls). The nutritional education and physical exercise program was provided for 6 weeks and dietary habits, nutrient intake and hematological profiles were measured before and after the program. The BMI (body mass index, $kg/m^2$) in male children was significantly reduced to $24.58{pm}2.81$ from $25.89{pm}3.27$ (p<0.01) and it was significantly reduced to $24.29{pm}3.51$ from $25.21{pm}3.59$ in female children after the completion of nutritional education and exercise program. Body fat in male children was remarkably reduced to $32.69{pm}7.74%$ after education from $37.38{pm}9.21%$ (p<0.001). After the program total cholesterol concentration in male children was reduced to $176.48{pm}29.10;mg/dL$ from $196.03{pm}29.10;mg/dL$, whereas there was no significant difference in females before and after the nutritional education and exercise program. The grasping power of male children (p<0.05) and backmuscle strength of male (p<0.05) and female children (p<0.001) were significantly increased after the exercise program. The nutrient intakes that were different before and after the nutrition education were calories (p<0.05) and carbohydrate (p<0.05) in male children, and a significant increase in intake of vitamin A (p<0.05) was found in female children. There was a significant difference in meal time regularity before and after program. The findings of this study showed that there was a significant decrease in both body fat and weight, in addition to normalization of hematological profiles after the completion of nutrition education and physical exercise programs.