The purpose of this study was to investigate the effects of Taekwondo training and nutritional education program on health related fitness and growth related factors in obese elementary school male students. 14 school male students were randomly assigned in obesity children group (OC, n=7) and normal weight children group (NC, n=7). The exercise intensity of Taekwondo training (50~80%HRR POLAR), the frequency (3 times per week, 60 minutes per session) was performed for 12 weeks and nutritional education has been conducted once a week. The test data were analyzed by paired t-test and %diff independent samples t-test, and the alpha level of p<.05 was set for all tests of significance. The %body fat in OC(-25.1%, p<0.01) has been significantly decreased. The skeletal muscle mass(OC: 18.6%, p<0.001, NC: 7.2%, p<0.01), muscular strength(OC: 10.5%, p<0.05, NC: 10.5%, p<0.05), muscular endurance(OC: 69.9%, p<0.01, NC: 19.2%, p<0.001), flexibility(OC: 48.1%, p<0.05, NC: 138.6%, p<0.01), cardiorespiratory endurance(OC: 54.1%, p<0.001, NC: 14.8%, p<0.05) and IGF-1(OC: 29.5%, p<0.01, NC: 30.5%, p<0.05) in both groups have been significantly increased, and the skeletal muscle mass in OC has been significantly increased(p<0.05) compared to NC. Muscular endurance(p<0.01), cardiorespiratory endurance(p<0.01), GH(OC: 206.2%, NC: -65.0%, p<0.05) in the OC group have been significantly increased compared to NC. In conclusion, the results of this study showed that Taekwondo training and nutritional education program improve health related fitness and growth related factors in obese elementary school male students. Additional studies conforming the results of this study are needed to compare the effects in various groups.