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The present studies to have researched the difference of factors related physical fitness of local area were proceeded, which had the limitation that these results could not represent the a population. Therefore, The purpose of this study was to research the relationship between obesity and health-related physical fitness of whole country teenagers. For the purpose, we choose the 18 elementary schools 820 students including which were located in 6 city. With the students' PAPS(physical activity promotion system) records, we analyzed the relationship between obesity and health-related physical fitness according areas. We used SPSS 12.0 program for data management. To analyze the difference of %fat mass according to the level of health-related physical fitness and to research the difference of health-related physical fitness according to the valuations(NYC & ACSM), one-way ANOVA was used and for the relation between obesity and health-related physical fitness logistic regression was used. The results were followed as below :On the %fat mass according the level of health with two valuations(NYC & ACSM), it showed that %fat mass of distribution from 1 to 3 magnitudes were belonged to normal group or overweight group, which indicated that students who were not obesity had more health-related physical fitness than obese group. On the health-related physical fitness according to the valuations(NYC & ACSM), There was some different %fat mass patten on factors of health related physical fitness. Test of hypothesis result about statistical significance about relation by body condition and health & fitness factor. On the relation between obesity and health-related physical fitness, there was model which might indicate health-related physical fitness with obesity in male students, but not females. However, obese group of cardiorespiratory endurance in elementary school had lower health level than normal students, which showed that obesity might affect the health-related physical fitness in schoolchild.