Predischarging current-limiting lightning rod

The utility model relates to a predischarging current-limiting lightning rod which comprises a main needle, an upper part and a lower part of a closed insulating tube, an energy storage device, an upper ring, a lower ring, an auxiliary needle, a current-limiting device and a base. The main needle is vertically upward, is located at the center of the whole lightning protection device, is connected with the upper end of the energy storage device through a metal connector, and is fixed on the upper part of the closed insulating tube. The energy storage device is connected with the upper ring, the upper end of the current-limiting device through a metal pressure sheet and is fixed on the closed insulating tube. 6 to 8 auxiliary needles are evenly distributed on the upper ring and the lower ring. The lower end of the current-limiting device is welded with the metal base. According to the utility model, upstream development of leader leads a thundercloud to discharge, thus the amplitude and rise gradient of lightning current can be effectively limited and lightning destructiveness is greatly reduced.