The invention discloses a rolling friction-wear testing device which comprises a power mechanism, a transmission mechanism, a first main shaft part, a second main shaft part, a loading mechanism, a support mechanism and an information processing system, wherein a rolling friction-wear test under the conditions of different rotational inertias, friction resisting moments and loads is realized through regulating the weight and the size of an insert wheel on the second main shaft part, a braking force of a braking device on the second main shaft part, and a loading nut of a loading device. The torque is detected by a torque sensor, and whether a drive wheel and a driven wheel is in failure or not under different testing conditions can be judged, the reliability of equipment is improved, and the economic cost is saved.