The invention discloses a multifunctional electric cable cutter. The cutter comprises a main cutter body, a threaded cover is in threaded connection with the inner surface of one side of the main cutter body through an inner thread, and a rubber grip is fixedly installed on the outer surface of the main cutter body; multiple heat dissipation holes are formed in the upper and lower surfaces of themain cutter body, a first fixing plate and a second fixing plate are fixedly installed on the inner side walls of the two ends of the main cutter body respectively, and a first placement layer is arranged between the upper end of the inner side of the main cutter body and the first fixing plate; a second placement layer is arranged between the first fixing plate and the second fixing plate, a third placement layer is arranged between the second fixing plate and the lower end of the inner side of the main cutter body, and a first small-sized motor is arranged at the side, close to a threaded cover, of the second placement layer. The multifunctional electric cable cutter is simple in structure and convenient to operate, a cable can be precisely and quickly cut, the cutting effect is good, screws different in type can be quickly assembled and disassembled, the function is more powerful, workers use the cutter conveniently, and the cutter better meets market requirements.