The invention discloses a novel spraying device and belongs to the technical field of agricultural machinery. The novel spraying device comprises an aeration tank, a booster pump, a pressure reducingvalve, a pipe coiling component, a water pipe and a spray pipe. The inner wall and the outer wall of the aeration tank are provided with a drain pipe. The outer wall of the aeration tank is provided with a cycle valve. A water inlet of the booster pump is connected with a water outlet of the drain pipe through a connecting pipe. A water inlet of the pressure reducing valve is connected with a water outlet of the booster pump. One end of the water pipe is connected with a water outlet of the pressure reducing valve, and the other end of the water pipe is connected with a water inlet of the spray pipe. The middle portion of the water pipe is wound around a roller of the pipe coiling component. The novel spraying device can independently operate when used in cooperation with an agricultural vehicle, is particularly suitable for regions with more terraced fields and difficult mechanization, is small in noise, free of pollution and small in labor intensity, capable of spraying large-area crops by diluting farm chemicals once and high in efficiency in the using process.