Earthquake alarm device

The utility model discloses an earthquake alarm device, including base, first equilateral tripod, the equilateral tripod of second, loop forming element, a plurality of touching formula switch, plumb -line, sash weight, alarm and power module, the pointed end of first equilateral tripod is fixed in on the base, the three sole end of first equilateral tripod up, the lower surface of loop forming element with the three sole end of first equilateral tripod links to each other to the horizontally is fixed in on the first equilateral tripod, the three sole of the equilateral tripod of second is held down and is fixed in the upper surface of loop forming element, the top of the equilateral tripod of second is fixed in to the upper end of plumb -line, and the lower extreme is connected with the sash weight, when when the base is located the horizontality, the sash weight is located the central point of loop forming element puts to and has predetermined gap between each touching formula switch, alarm, power module an