The purpose of this study is to examine the effect of social self and body image on the appearance management behavior. The data were collected via a self-administered questionnaire from 419 male and female college students in Jecheon and analyzed by factor analysis, cluster analysis, t-test, regression and correlation. The results of this study were as follows : 1. Body image classified into four factors- emotional, cognitive, behavioral body image and interest in weight. 2. There existed correlation between social self and body image. According to gender, there existed significant differences in social self, body image and appearance management behavior. 3. College students classified into two groups- high and low social self group according to the degree of social self. Two groups showed statistically significant differences in body image and appearance management behavior. 4. In male and female groups, social self and body image influenced to the various appearance management behavior according to gender. The most important appearance management behavior which was affected by social self and body image was diet.