Earthquake alarm

The utility model discloses an earthquake alarm, which comprises a box body, an alarm circuit and a conduction metal flexible wire. A hollow tapered metal suction member is fixedly installed on a baseboard in the box body and is connected with a hollow tapered nonmetal member cap which has a central hole; an adjusting installation rod with threads at two ends is installed above the hollow tapered nonmetal cap, two ends of the adjusting installation rod penetrate out of the box body and connected with the box body through nuts, and an insulation plastic reel is fixedly sleeved on the adjusting installation rod and located above the central hole of the hollow tapered nonmetal cap; the lower end of the conduction metal flexible wire is connected with a conduction permanent magnet, the upper end of the conduction metal flexible wire penetrates through the central hole of the hollow tapered nonmetal cap, then winds around the plastic reel and finally is electrically connected with the alarm circuit, and the conduc