The invention relates to the field of a lightning-protection grounding geographic pole and particularly relates to a graphite lightning-protection grounding module and a preparation method thereof. The graphite lightning-protection grounding module is made from graphite powder, granular graphite and asphalt. The preparation method comprises the steps of material preparing, kneading, blank preparing, roasting, post processing, and the like. The graphite lightning-protection grounding module disclosed by the invention is low in electrical resistivity, relatively high in mechanical strength, resistant to corrosion and long in service life.