Building fire pool system

The utility model discloses a building fire pool system which comprises a fire pool, a backflow pool and a rainwater pool, a rainwater connecting pipe is fixedly assembled on the upper surface of the rainwater pool, and a connecting shaft is arranged in the rainwater connecting pipe. According to the building fire-fighting pool system, water in the fire-fighting pool can flow into the backflow pool through the backflow pipe, water can be conveniently purified again by starting a water quality purifier, and it is prevented that microorganisms, bacteria and algae are bred in water, and fire-fighting practicability is affected; water filtered by the second filter screen is conveniently pumped into the fire pool again, fire fighting use is facilitated, it is guaranteed that the water level in the fire pool is higher than that of the backflow pool through continuous starting of the second water pump, continuous circulating flowing of the fire pool is facilitated, and the situation that water becomes smelly due to