Fire-fighting water storage tank

The utility model discloses a fire-fighting water storage tank which comprises a water storage tank body and supporting legs, the supporting legs are fixedly installed at the four corners of the bottom end of the water storage tank body, a water supply mechanism is arranged on one side of the water storage tank body and comprises a water pump, a water suction pipe, a water inlet pipe and a liquid level meter, and the water pump is fixedly installed on a supporting seat arranged on the supporting legs. The water suction end of the water pump is fixedly connected with a tap water pipe through a water suction pipe, the water outlet end of the water pump is connected with one side of the top end of the water outlet tank through a water inlet pipe, and a one-way valve is arranged at the top end of the water inlet pipe. By arranging the water supply mechanism on one side of the water storage tank, automatic water feeding treatment in the water storage tank is achieved, and the situation that a water source is insuf