Fire alarm device

The utility model provides a fire-fighting alarm device which comprises a fire-fighting alarm body, an upper water tank is installed at the upper end of the fire-fighting alarm body, the lower end face of the upper water tank is sunken upwards to form a plurality of through holes, the through holes are located in the outer side of the fire-fighting alarm body, and an arc-shaped protrusion is installed in the middle of the bottom end in the upper water tank. Water pumping equipment is installed at the outer end of the upper water tank, an outlet portion of the water pumping equipment communicates with a water outlet pipe, the end, away from the water pumping equipment, of the water outlet pipe extends into the upper water tank, and an outlet of the water outlet pipe faces the middle of the upper end of the arc-shaped protrusion. A lower water tank is arranged at the edge of the lower side of the annular end of the fire alarm main body, an opening of the lower water tank faces upwards, an inlet part of the wate