This study is to investigate the effect of perfectionism tendency of university sports players on communication ability and physical self-efficacy. As of 2022, a sample was drawn mainly from students who were active as university sports players at 4-year colleges in Gangwon-do. First, it was found that the perfectionism tendency of university sports players had an effect on communication ability. Second, it was found that the perfectionist tendencies of university sports players had an effect on their physical self-efficacy. Third, it was found that there was a causal relationship between the perfectionist tendencies, communication skills, and physical self-efficacy of university sports players.