This invention discloses a lightning current surge testing stand, comprising a cabinet, a through-flow fixture, an oscilloscope and an LER discharging circuit. A main power switch is positioned on the cabinet panel, a single-push button, a constant-impacting button, a time relay, a counting relay, an output terminal, through-flow sampling port, a voltage-limitation sampling port, a digital voltmeter, a manual operation potentiometer knob, a booster knob and a protection switch for a voltage-sensitive through-flow fixture. The LCT discharging circuit electrically connected to electrical members on the cabinet panel is positioned within the cabinet; a piezoresistor to be detected is positioned within the through-flow fixture; the oscilloscope is connected to the through-flow sampling port; the single-push button is pushed and the wave shape is observed; the voltage setting value is adjusted until the 8/20 Mu wave shape of the specific peak value is shown on the circuit; the voltage setting value is fixed; the next batch of the piezoresistors are enclosed and the change of the voltage of the piezoresistor after the through-flow test is compared. In this invention the charging and discharging of the capacitor are controlled by the electric circuit, which simplifies the operation, and pushing the button for one time remotely can finish 1-99 times of surge test.