This study explores the impact of plyometric training on physical fitness of futsal players in high school. Randomly divided into test team and control team, 24 high school boys are trained for 12 weeks. The experiment is designed to find out whether there is obvious difference between test team and control team on speed, explosive strength, agility. Results show that test results on speed, explosive strength, agility of test team and control team are significant different between teams and within teams. Plyometric training of 12 weeks is helpful to improve students’ speed, explosive strength, agility.