The invention relates to a cutter, in particular to a high-voltage cable cutter. The technical problem to be solved by the invention is to provide the high-voltage cable cutter with time and labor saving, high working efficiency and convenience for use. In order to solve the technical problems, the invention provides the high-voltage cable cutter. The high-voltage cable cutter comprises a bracket, a slide rail, a slide block, a moving frame, a motor, a gear, a collecting frame, a guide sleeve, a lifting rod, a cutter, a cable, an ejector plate, a conveying device, a connecting rod, a block body, a first rack and a second rack; the slide rail is arranged at the bottom of the inner side of the bracket; the slide block is arranged at the top of the slide rail; the moving frame is arranged at the top of the slide block; and the second rack is arranged at the bottom of the inner side of the moving frame. The high-voltage cable cutter achieves the effects of time and labor saving, high working efficiency and convenience for use, can prolong the service life of the cutter, can save the energy, cannot injure human bodies, and is safe and reliable.