Provided is a cutting machine that cuts a high-temperature moving object to be cut while moving in synchronization with the movement of the object to be cut, and that is capable of effectively protecting itself from the heat of the object to be cut and effectively utilizing the heat. A cutting machine for cutting a high-temperature moving object to be cut while moving in synchronization with the movement of the object to be cut, comprising: a cutter configured to cut the object to be cut; a movement device configured to move the cutting machine in synchronization with the object to be cut; a water-cooling plate configured to cool the cutting machine; and a thermoelectric power generation device including a thermoelectric element for converting the heat of the object to be cut into electric energy, wherein the water-cooling plate also serves to cool a low-temperature side of the thermoelectric element.