The low ability of the physical condition of the men's basketball team SMP Al-Azhar Syifa Budi II Pekanbaru was the background of the problem of this research. This study aims to determine the effect of box jump training on leg muscle power. This research uses correlational research. The study population was the men's basketball team SMP Al-Azhar Syifa Budi II Pekanbaru, totaling 12 people. The…