The invention discloses a multifunctional icebreaking snow clearer which is composed of a spiral roller, a holding frame, a supporting plate, a damping spring, a front beam, a bent frame supporting beam, a vehicle body chassis, a cab, a snow sweeping device, a tail device, a snow shoveling plate, a hydraulic rod, a front supporting frame, a salt scattering device, a strip-shaped resistor and the like. The road icebreaking and snow clearing device is placed at the front end of a vehicle, after road surface icebreaking treatment is conducted through the spiral roller, broken ice and accumulatedsnow are pushed by the snow shoveling plate to the two sides of a road, a tail snow clearing device is arranged at the tail portion of the vehicle so that secondary snow clearing can be achieved, andtherefore the efficiency of the whole icebreaking snow clearer for road surface ice and snow treatment is improved, in the icebreaking and snow clearing process, when ice and snow left in gaps betweenall spiral icebreaking grooves of the spiral roller are secondarily frozen, and the heat dissipated by the resistor strip can melt corresponding ice and snow. The road icebreaking and snow clearing device is compact in design and structure, convenient to operate and particularly suitable for domains with much accumulated snow and some roads prone to secondary freezing.