The purpose of this study was to investigate the effects of rapid weight loss on basic physical strength, punch endurance force and visual perception-motor coordination in elite boxer. 11 male elite(age = 17.72 ± 0.90 years, career = 47.18 ± 14.77 month) completed body composition, muscle strength, agility and cardiorespiratory endurance assessment three day prior to an official weigh-in (pre-test) and immediately after the weigh-in (post-test). Rapid weight loss program with 5.41% of weight loss had a significantly reduced impact on cardiorespiratory endurance, while the changes of muscle strength and agility were not significant after rapid weight loss. These findings demonstrate negative effects on cardiorespiratory endurance, punch endurance force in elite boxers engaging in rapid weight loss strategies prior to competition. But, these findings demonstrate negative effects on visual perception-motor coordination in elite boxers engaging in rapid weight loss strategies prior to competition.