Lightning is one of the most serious natural disaster year after year, along with the internal structure of China microelectronics equipment is highly integrated (VLSI chip), resulting in equipment to withstand overvoltage,overcurrent resistance levels drop, the lightning (including induction lightning and overvoltage) load bearing capacity reduce surge. As everyone knows, the lightning is devastating, the voltage of up to millions of volts,instantaneous current of up to hundreds of thousands of amperes. The destructive consequences caused by lightning stroke is embodied in the following three levels: the damage of equipment; reduce the equipment or component.