The invention belongs to a power transmission and transportation tool, in particular to a lightning-protection grounding column. The lightning-protection grounding column comprises a bracket (1), a clamp nut (2), a 10 KV lightning arrester (3) and a connection copper plate (5), wherein the upper plane of the bracket (1) is fixedly connected with an insulator (9) and is fixedly connected with the lightning arrester (3); the connection copper plate (5) is arranged at the upper ends of the insulator (9) and the lightning arrester (3); the left end of the connection copper plate (5) is provided with a connection lead wire hole (5-2) and the right end of the connection copper plate (5) is provided with a connection cable hole (5-1); a grounding terminal (7) is arranged above the connection copper plate (5) at the upper end of the insulator (9) and the upper end of the grounding terminal (7) is sleeved with a grounding terminal insulating cover (6); the upper surface of the connection copper plate (5) at the upper end of the lightning arrester (3) is locked and fixed; the insulating cover (6) covers on the peripheries of the connection copper plate (5), a bolt, a gasket, the lower end of the grounding terminal (7), a screw rod (11), and the upper ends of the insulator (9) and the lightning arrester (3); and the lower side of the insulator (6) is buckled by using an insulating cover lock buckle (4). The lightning-protection grounding column provided by the invention has the advantages of low construction cost, simple structure and is convenient and safe to use.