The invention provides a recovery device for a floor waterproof material. The recovery device comprises an air suction pipe, a deposition device, a return liquid pump and a recovery tank. One end of the air suction pipe is connected to a spraying production line; the other end of the air suction pipe is connected to the deposition device; the deposition device comprises a first deposition tank and a second deposition tank; the return liquid pump is connected to the first deposition tank and the second deposition tank through return pipes respectively; the deposition device also comprises a third deposition tank; an outlet of the second deposition tank is connected to a suction inlet of the third deposition tank; an outlet of the third deposition tank is connected to a vacuum pump; a return liquid opening is connected to the return liquid pump; the third deposition tank is connected with a reception tank and a water suction tank; an outlet of the reception tank is connected to a suction inlet of the water suction tank; the top of the water suction tank is provided with a gas exhaust opening; the water suction tank is filled with water; and the suction opening is disposed below a water surface. The recovery device has small pollution and low electric energy consumption and mechanical loss.