This study examined the mediating effect of physical image in the relationship between physical appearance evaluation pressure and physical dissatisfaction of mass media and verified how to control this mediating effect of exercise participation level. For this purpose, 242 male and female members attending the fitness center collected data through questionnaires of mass media pressure, body image, physical dissatisfaction, and exercise participation level. The data were collected using the SPSS 18.0, PROCESS Macro statistical program Cronbach''s Alpha value were calculated to test the frequencies and reliability of each measurement tool to determine general characteristics. In order to examine the validity of Configuration concept, exploratory factor analysis was conducted. The descriptive statistics of major variables, Pearson''s ratios correlation analysis, and mediator effect were analyzed and the following main results were obtained. First, mass media pressure had a positive (+)indirect effect on body dissatisfaction through skinny type internalization. Second, mass media pressure had a positive (+)indirect effect on body dissatisfaction through internalization of athletic body type. Third, the indirect effect of skinny type internalization mediating the relationship between mass media pressure and body dissatisfaction was significantly controlled according to exercise participation level. Fourth, the indirect effects of internalizing the athletic body that mediate the relationship between mass media pressure and body dissatisfaction were significantly controlled according to the level of exercise participation. Fifth, mass media information had a positive (+)indirect effect on body dissatisfaction through the skinny type internalization. Sixth, mass media pressure had a positive (+)indirect effect on body dissatisfaction through internalization of athletic body type. Seventh, the indirect effect of skinny type internalization mediating the relationship between mass media information and physical dissatisfaction was significantly controlled according to the level of exercise participation. Eighth, the indirect effect of internalization of athletic body that mediates the relationship between mass media information and physical dissatisfaction was significantly controlled according to the level of exercise participation.