The purpose of this study was to examine the change of Self-concept of undergraduates who participated in a camping intensive course. There were 28 subjects of both sexes. For a questionnaire, the self Enhancement Scale created by Kajita was used. The survey was conducted on the undergraduates before and after the camp. As a result, the following findings were obtained: 1) The self-growth points of undergraduates who had participated in the Camping Intensive course increased after the camp. Thus, the Camping Intensive course had helped to improve their self-concept.2) "Effortism," a component of self-concept, increased dramatically after the camp (P<0.05) .3) As a result of a factor analysis of the study results, we were able to sample the four factors of "achievement motivation and self-confidence," "inferiority complex," "effort/challenge," and "other-consciousness." 4) After the camp, we observed a decline in the rank of the "achievement motivation and self-confidence factor" and a rise in the ranks of the "inferiority complex factor" and "effort/challenge factor."