The invention discloses an in-wheel motor vehicle road simulation test bed. The test bed comprises four simulation platforms; each simulation platform comprises rollers, bearing seats, a fixed disk, a thrust ball bearing and an exciting head; the upper end surface of the fixed disk are symmetrically provided with two rollers; two ends of each roller are fixedly connected with the fixed disk through the bearing seats; the rollers are connected with the bearing seats through bearings; a shaft is welded onto the center of the lower end surface of the fixed disk; the thrust ball bearing is fixed on the shaft; the top end of the thrust ball bearing is fixedly connected with the fixed disk, and the bottom end of the thrust ball bearing is fixedly connected with the exciting head; a wheel is arranged between the two rollers; and the two rollers abut against the wheel. According to the in-wheel motor vehicle road simulation test bed of the invention, based on the combination of the rollers and the thrust ball bearing, motion and steering operation in a simulation test is realized, and therefore, the motion interference of a suspension system and a steering system can be comprehensively tested, and the vibration reliability test of the in-wheel motor of a vehicle under a working state can be completed, and effective test support can be provided for the design and optimization of in-wheel motor vehicles.