In this paper, a pulley-belt system with one-way clutch is taken as a research object. The influence of the oneway clutch on the vibration behavior of the multiwedge belt is experimentally studied. The vibration reduction effect is confirmed by the contrast experiment between the pulley-belt system with oneway clutch and the one without oneway clutch. Moreover, the influence of the initial tension of the belt on vibration reduction effect is studied. For the pulley-belt system with oneway clutch, the experimental results show that the vibration of the multi-wedge belt presents the nonlinear vibration behavior with the change of rotating speed. Furthermore, the experiment finds that the one-way clutch can significantly reduce the transverse vibration of the multi-wedge belt.