The invention provides a grounding electrode insulation shielding structure used for reducing the pace voltage of grounding electrodes, which comprises the grounding electrode that is arranged under the ground surface, a coke bed covering the grounding electrode, and an insulating barrier that is arranged between the grounding electrode and the ground surface and is used for preventing the electric current from flowing towards superficial layer soil and forcing the electric current from flowing towards submerged soil, thus reducing the pace voltage of the ground surface. According to the structure, the maximum pace voltage is reduced in a way of saving more instruction funds under the condition that the size of the grounding electrode is not increased, and land occupying area is not enlarged.