This study investigated the relationship among negative rumination, self-conscious emotions of shame, guilt, and envy, and four factors of self-oriented perfectionism: desire for perfection, personal standard, concern over mistakes, and doubt of actions. One hundred and forty eight (148) university students completed a questionnaire. Results showed that shame and envy had a positive correlation with negative rumination. Also, covariance structure analysis suggested that concern over mistakes led to negative rumination, which was mediated by envy. Implications of the present findings and future research directions are discussed.