The invention is a chassis of magnetic suspension test vehicle with guide wheel system, including: underframe, vehicle driving bridge, gear differential, semishaft, rubber tyre wheel, rubber tyre guide wheels, and guide wheel frame. There are several vehicle bridges parallelly fixed on the underframe, and the middle and inside of the underframe are set with the gear differential and the semishaft, respectively, and the rubber tyre wheel are set at tow ends of the underframe, the rubber tyer guide wheels are set on the wheel shafts at two ends of the guide wheel frame and can freely rotate, many groups of guide wheel frames are allocated vertically and symmetrically along the underframe and fixed at the bottom of the two opposite sides of the underframe, the axis of the rubber tyre guide wheel is vertical to that of the rubber tyre wheel, the distance between the flanges of the corresponding guide wheels on two side of the underframe is greater than the width of the guide surface of the guide rail, and thus the flanges provide side location support and guide for the test vehicle safely running on the magnetic suspension railway beams along the railway. It has reasonable structure, smooth running and good guiding performance, and low running noise.