The purpose of this study was to investigate the effect of perfectionism on sport commitment and burnout of badminton club members. The subjects of this study consisted of 350 badminton club members. The used instruments were the Perfectionism Scale by Hyun(1992), the Sport Commitment Scale by Jung(1997), and the Exercise Burnout Scale by Song(1999). The data were analyzed by correlation analysis, multiple regression analysis as a statistical method. The result of this study were as follows. First, among the subscale of perfectionism, organization positively influenced cognitive commitment. But concern over mistakes negatively influenced cognitive commitment. And organization positively influenced behavioral commitment. Second, among the subscale of perfectionism, organization positively influenced personal accomplishment. Both concern over mistakes and personal standards positively influenced depersonalization. And concern over mistakes, doubts about action, and personal standards positively influenced mental exhaustion. Third, cognitive commitment positively influenced personal accomplishment but negatively influenced depersonalization. And behavioral commitment positively influenced mental exhaustion, depersonalization, and personal accomplishment.