The purpose of this study was to test the moderating effect of sports activity in relation between self conception and college students' adjustment. The participants were 437 college students. All the students administered three instruments, Self Conception scale, College Students’ Adjustment scale, and Sports Activity scale. The results of this study were as follows: First, self conception were significantly related to college students’s adjustment. Second, self conception was significantly related to sports activity. Third, sports activity was significantly related to college students’ adjustment. Forth, it was proved that sports activity exerted as moderating variable between self conception and college students’ adjustment. The implications of this study were investigated variables regarding college students’ adjustment to help college students. Based on the finding results, discussion and implication for further research were suggested.