The invention discloses a road deicing device. The road deicing device comprises a box body, a pole and a storage box are arranged on the box body, a motor A is arranged on the pole, a cross bar A isarranged on the motor A, a crank is arranged on the cross bar A, a ring sleeve is arranged on the crank, and a barrel body is arranged inside the ring sleeve and is hinged to the box body. A motor B is arranged on the barrel body, a screw A is arranged on the motor B, a nut A is arranged on the screw A, a transverse plate is arranged on the side of the nut A, and a hot air blower is arranged underthe transverse plate. An insulation plate is arranged inside the box body, an ice crushing cavity and an ice melting cavity are formed in the two sides of the insulation plate respectively, and a motor C and a motor D are arranged inside the ice crushing cavity. A screw B is arranged under the motor C, a nut B is arranged on the screw B, a screw C is arranged under the motor D, a nut C is arranged on the screw C, a motor E is arranged on the nut C, a crankshaft is arranged on the motor E, a sleeve A is arranged on the crankshaft, a vertical bar is arranged under the sleeve A, a piston is arranged under the vertical bar and is inserted into a sleeve B, a sloping plate is arranged on the lower wall of the ice melting cavity, and a shovel plate is arranged under the sloping plate. Accordingto the road deicing device, an ice surface can be preheated first, then the ice surface is broken and a snow melting agent is sprinkled, and finally, the ground is cleaned.