High-efficiency laminated graphite discharge gap device, including N+1 discharge gaps and a π-shaped connection capacitor group composed of N capacitors with the same capacitance value, each discharge gap is connected in series, the first discharge gap F1 is connected to the live wire, the last one The discharge gap FN+1 is grounded, and one end of each capacitor in the π-shaped connection capacitor group is connected to the conductive part between the two discharge gaps, and the other end is grounded. The discharge gap is a graphite discharge gap, and an insulating ring gasket is placed between the graphite electrodes. , each graphite discharge gap is stacked and assembled, and the parameters of each capacitor in the π-shaped connection capacitor group are selected according to the formula C=In / 2πfVK, in the formula: In is the induced discharge current on the capacitor in the π-shaped connection capacitor group, In=I / N, I is the total current of the π-connected capacitor group, N is the number of capacitors in the π-connected capacitor group, f is the frequency of the lightning wave, V is the rated voltage on the capacitor in the π-connected capacitor group, and K is the safety factor ≥ 1 . The device can also be provided with a current fuse and an indicating circuit.