The utility model discloses a tailing reservoir backwater pump station that floats, include concrete boat, water pump, wherein the hull structure of concrete boat just designs into check storehouse formula for the rectangle, and every check storehouse of concrete boat is one needs close factory building, and every close factory building of need all is equipped with the distribution control chamber, still is equipped with spray set on the concrete boat, and many water pumps lead to pipe and connect in parallel and install on the concrete boat. Compared with the prior art, the utility model discloses utilize the concrete boat to bear the weight of water pump and factory building, can rise along with the positive surge, can avoid needing to move the drawback of fixed pump station owing to the positive surge, reduce manual work and equipment financial loss that the water pump aversion brought, and the spray set of configuration can prevent effectively that the hull from freezing and preventing to catch fire.