The invention relates to a concrete-rod grounding anti-thunder protection system which includes a concrete rod, a built-in rib and a grounding device. The upper end of the built-in rib is connected with ground wires which are installed on the concrete rod. The lower end of the built-in rib is connected with the grounding device. The system is characterized in that a wire is fixedly installed at the outer side of the concrete rod; the upper end of the wire is connected with the ground wires installed on the concrete rod; and the lower end of the wire is connected with the grounding device. In the concrete-rod grounding anti-thunder protection system, the ground wires and the grounding device are connected through the external wire and the wire is fixed at the outer side of the concrete rod so as to form parallel connection with the built-in rib of the concrete rod and the resistance value is made be smaller than the resistance of the used wire so as to ensure that a grounding resistance value is up to standard. Therefore, the discharge capacity of a line is ensured, the anti-thunder level of the line is improved significantly and risks of switch tripping or device damages caused by thunder strikers are reduced; and the system is great in economical efficiency, high in practicality and obvious in effect; and at the same time, measurement of the grounding resistance is simpler and wire replacement is convenient. The system is capable of electrification installation, simple in device, great in economical efficiency and obvious in effect.