The invention discloses a ground wire protection device. The ground wire protection device is composed of a protective sleeve, conductive rings, seal rings and damp-proof filler. A pay-off pipe is arranged in the center of the protective sleeve, annular protrusions which are axially perpendicular to the pay-off pipe are evenly distributed on the outer wall of the protective sleeve, and the annular protrusions and the protective sleeve are integrally formed. A wire passing hole is formed in the middles of at least two of the seal rings, the seal rings are evenly distributed inside the protective sleeve from the top end of the protective sleeve, and the damp-proof filler is filled between every two seal rings and between the seal rings and the inner wall of the protective sleeve. The number of the conductive rings is at least 3, the conductive rings are evenly distributed inside the pay-off pipe, the conductive rings is additionally provided with wiring holes and conductive paste layers are additionally arranged inside the wiring holes. Compared with a traditional ground wire device, the ground wire protection device has the advantages that the conductive performance between a ground wire and the ground is improved, the corrosion resistance of the ground wire is improved, the effective service life of the ground wire is effectively prolonged, the detecting times are reduced, great convenience is brought to ground wire detection and replacement operations, the grounding reliability of electric equipment is improved, meanwhile, the labor intensity of ground wire detection, maintenance and replacement is reduced, and the working efficiency of circuit protection is improved.