The invention discloses a lightning arrester device with anti-seismic function, including a bottom plate, a mounting box is fixedly connected with the top of the bottom plate, A moving plate is slidably connected between two sides of the inner wall of the mounting box, the two sides of the top of the moving plate are fixedly connected with the ejector rods, The top of the ejector rod penetrates through the mounting box and extends to the top of the mounting box, one end of the ejector rod extending to the top of the mounting box is fixedly connected with a mounting plate, the top of the mounting plate is fixedly connected with a lightning arrester, and the bottom of the inner wall of the mounting box is fixedly connected with a movable frame, which relates to the technical field of lightning arrester earthquake proofing. The lightning arrester device with an anti-seismic function has very good seismic performance, and in the anti-seismic process, the stability of the lightning arresteris very strong, the seismic performance of the lightning arrester is greatly improved, the circumstance is avoided that when an earthquake occurs, high-intensity vibration of the lightning arrester occurs, internal parts are damaged, resulting in the lightning arrester losing the role of lightning protection, and the service life of the lightning arrester is greatly prolonged.