（Department of Physical Education，Guangdong University of Technology，Guangzhou 510006，China)
Abstract: The author measured the self-esteem and self-control as well as aggressiveness of university student athletes, and examined the correlations between the self-esteem and self-control as well as aggressiveness of university student athletes. The results indicate the followings: athlete’s self-esteem shows a significant negative correlation with aggressiveness, aggressive be-haviors and aggressive emotions, while self-esteem shows a negative correlation with aggressive cognition; athlete’s self-esteem shows a significant positive correlation with impulse control, working or learning performance and healthy habits, and a positive correction with controlling entertainment and resisting temptation; self-esteem and self-control play a significant positive role in predicting athlete’s aggressiveness; self-control plays a partial role in mediating between self-esteem and aggressiveness.Key words: sports psychology；self-esteem；self-control；aggressiveness；university athlete