Abstract: The high jump test of eccentric wheels in the team competition of the 11th National Zhou Peiyuan Competition on Mechanics is investigated. The dynamical model of the eccentric wheel rolling and bouncing on a slope is built. The bouncing condition is analyzed and obtained. The dynamical process from pure rolling to continuous bouncing after releasing without an initial velocity is studied. The influence of the inclined angle, the initial release angle and the friction coefficient on the bouncing behavior is revealed.