The invention relates to a road marking removal device, belonging to the field of municipal tools. Concretely, the road marking removal device is composed of a rack, drivers, wheels, a front guide frame, a front guide wheel, an ultrasonic sensor, a first telescopic rod, a second telescopic rod, a first duct, a first motor, a baffle, milling rollers, a first round brush, a second round brush, a column brush holder, a column brush, a second motor, an absorption tank, a corrugated pipe, a first axial flow fan, a first check valve, a waste box, a third motor, a dust box, a battery, a second axialflow fan, a controller and a second one-way valve. The drivers are arranged at the four corners of the lower surface of the rack. The wheels are mounted on the drivers and are in cooperation transmission with the drivers. The front guide frame is composed of an upper front guide frame, a lower front guide frame and a lead spring. The road marking removal device can realize the removal of road marking lines, the telescopic rod type milling roller bracket is adopted and the milling rollers are supported at both ends, so that the milling rollers work more stably and the operation is more precise.