The utility model provides an earthing device suitable for station steel string structure, include and encircle the band steel, the company's of colluding band steel, screw top, ground connection is arranged and the ground terminal box, it fixes on steel string structure to pass through screw top around the band steel, the company's of colluding band steel one end with encircle that the band steelis detachable to be connected, the other end is fixed mutually with the structural slab reinforcing bar, the ground terminal box with encircle that the band steel is detachable to be connected, ground connection arranging is settled in the ground terminal box, ground connection is arranged both ends and all is provided with the installation hole site, ground connection is arranged and to be connected through installation hole site and ground terminal box with around the band steel is detachable. The beneficial effect of the utility model both can reliably be connected steel string structure with the structural slab reinforcing bar, and can satisfy the requirement of construction rules again, and alone can independently accomplish the operation moreover, easy operation is convenient, is applicable to the steel string structure of different diameters, improves the commonality of device, and have easy operation, maintain convenient, advantages such as the construction effect is pleasingto the eye, standard.