The utility model aims at providing a ground operation rod device of a transformer substation, wherein the ground operation rod device has advantages of convenient and labor-saving operation, rapid ground wire mounting and dismounting, and high security. The ground operation rod device comprises an operation rod and a ground wire clamp head; the operation rod includes an insulated tube; and a three-claw mechanism is arranged at the top of the insulated tube, a connecting mechanism is arranged at the middle portion, and a power operation mechanism is arranged at the bottom. The three-claw mechanism includes three claws that are hinged to a three-claw seat; a spring II is arranged at the three-claw seat; a three-claw sleeve is arranged at the outer side of the three-claw seat; and an iron pipe sleeve is arranged at the position where the three claws and the insulted tube are contacted. A connecting tube is arranged at the lower end of the insulated tube at the operation mechanism; and an edge-on operation handle is connected to the side surface of the connecting tube, wherein the operation handle is in a shape of the Chinese character "ao". The ground wire clamp head includes a fixed clamp sear and a moving clamp, wherein the fixed clamp seat and the moving clamp form an F shape; a pull rod is arranged at the lower end of the moving clamp; a return spring is arranged at the pull rod; and the pull rod penetrates a guide sleeve of the fixed clamp seat and is connected with the three claw mechanism by cooperation. The provided ground operation rod device with the simple structure can be implemented easily.