The purpose of this study is to analyze factors relationship between dental caries experience and obesity among elementary school of student`s in oral health clinic to provide empirical data for school of oral health program. The subjects of this study consists of 235 elementary school student`s in Gyeongsan area. The data were collected from July 1 to 30, 2011 by self-administrative questionnaires. Increased with age in the lower level dental caries experience. Dental caries experience and obesity realted to were not with Mother`s employment status, education level, economic level each other. Number of weekly exercise normal weight (9.4%) than obesity weight (21.5%) was higher in the 0 times. The obesity and dental caries experience was not associated with each other. The results suggest that social and demographic variation and regardless of don`t home care made ??in support do student`s oral and health care school health in terms of how much management so school oral health clinics later gradually enlarge and systematic a national policy will be implemented.