Power line protection device

The utility model belongs to the technical field of line protection, and discloses an electric power line protection device, which comprises a fixer used for being connected to the outer side of an electric power line and enabling the fixer and the electric power line to be relatively fixed; the protective shell assembly is movably connected to the outer side of the fixer so as to at least rotate around the axial direction of the power line, and the surface of the protective shell assembly forms a circumferential protective surface; and a plurality of thorn-shaped components which are uniformly distributed on the circumferential protection surface of the protection shell assembly. Compared with an existing rat-proof thorn, the rat-proof thorn is high in universality and can adapt to different wire diameters and different scenes; overall rotation is achieved, the prevention efficiency is high, and large-small through prevention is achieved; installation is convenient, fixation is firmer, and the cable cannot s