The invention discloses a vehicle suspension performance test bench comprising travelling devices, a lower beam, an upper beam, damping suspensions, a rotator, a driving device, a base, a vibration test system, a circular simulation pavement and a base mounting flange. The base mounting flange is disposed within the circular simulation pavement. The base is connected to the base mounting flange through bolts. The lower beam is supported on the circular simulation pavement through the travelling devices mounted at two ends. The rotator is vertically disposed within the circular simulation pavement. The middle of the upper beam and the middle of the lower beam are connected with the rotator through structures capable of sliding up and down. The vehicle suspension performance test bench has the advantages that a 1/2 vehicle model is used for simulation with the circular simulation pavement, the driving device drives the upper and lower beams supported on the circular simulation pavement to rotate though tires and the damping suspensions, the state is closer to an actual driving state, test reliability is improved, and test precision is improved.