Electrostatic discharge device

The utility model relates to an electrostatic discharge device which comprises a box body, a first conductive plate and a second conductive plate are arranged in the box body, the first conductive plate is electrically connected with a preamplifier, the second conductive plate is electrically connected with a ground wire, and two groups of resistors and diodes are connected in parallel between the first conductive plate and the second conductive plate. One end of the resistor is electrically connected with the first conductive plate, the other end is electrically connected with the anode of the diode, and the cathode of the diode is electrically connected with the second conductive plate; through the arrangement of the first conductive plate, the second conductive plate, the resistor and the diode, static electricity flowing to the pre-amplifier can flow to the grounding wire through the first conductive plate, the resistor, the diode and the second conductive plate in sequence, the static electricity is rele