The purpose of this study was to investigate how coaches' leadership behavior influences the performance of male A league soccer players. The subjects of this study were 151 male A league soccer players in 2003 colleges and universities nationwide with average age 20.46±1.58 years. The questionnaire "Leadership Scale of Sport" was used as research instrument. The data was analyzed by One-way ANOVA and Independent t-Test. The results of this study were as follows: 1. With different backgrounds, the perceived coaches of the athletes having more than six days of training frequencies appear to have more autocratic behaviors than those who have 4~5 days of training frequencies. All of the national level players' perceived coaches' leaderships on coaches' "training and instruction", "autocratic behavior" and "social support" were higher than those of national games level and school team level players. 2. The peuception of coaches' "democratic behavior", "autocratic behavior" and "positive feedback" of athletes in the helter performance group is significantly higher than those in the worse performance group. The results indicate that the better sports achievement and sport performance that male A league soccer players have, the higher perception of coach's "autocratic behavior" they have. We conclude that the effects of coaches' leadership behavior on team performance are not gnorable. Coaches' autocratic behavior is a more important determination than other coaches' leadership behavior.