Purpose: The study was for researching the body image, self esteem and sociability of elementary students related on obesity. Methods: As the method, a convenience sample had been consisted of both 83 boys and 81 girls on 6th grade in elementary schools in Taebaek city. The data were collected through a self-report questionnaire between June 4th and June 8th, 2007. Then x2 test, One-way ANOVA, Scheff Test, and Pearson Correlation worked on the data using SPSS program. Results: On the result, 6th grade students have been perceived less on their overweight and obesity than the actual. On the research, 38.6% of the girls and 19.7% of the boys were actually obesity on their weight. However, 22.9% of the boys and 16.0% of the girls only has been recognized their obesity on the weight. Meantime 37.3% of the boys and 54.3% of the girl wanted to lose their weight. Body image has relatively a positive correlation by moderate level with self-esteem (r =.552. p<.01) and sociability(r=.509, p<.01) as well. Conclusion: As a conclusion of this study, health educators in elementary school need to lead for elementary students to improve their self-esteem and sociability through keeping normal weight. I would like to suggest that the educators need to develop a program for students to perceive the value of health and keep on normal weight.