The utility model provides a static electricity discharge device, static electricity discharge device sets up the exposed position of metal at the handrail of oil storage tank staircase, static electricity discharge device includes: metalwork, bolt and earth conductor, wherein, be provided with the bolt hole on the metalwork, the bolt passes through the bolt hole will the metalwork is fixed on the handrail, earth conductor one end with bolted connection, the other end with the earthing pole of oil storage tank is connected. The utility model provides a static electricity discharge device, the staff can channel into the earth with static on one's body through the touch metalwork to avoid static in case take place to discharge, cause serious consequences such as burning explosion.