The invention discloses a high-efficiency dust-free dust machine, which comprises a feeding hopper, a body main body, a belt, a motor, a discharge port, a crushing knife, a water tank and a water sprayer. The feeding hopper is fixed on the body of the machine body. Above, the discharge port is fixedly connected to the lower part of the main body of the fuselage, the outside of the pulverizer is connected with a pulverizer fixing rod, the right side of the water tank is provided with a water pump, and the left side of the water pump is connected with an electrical control box. The right side of the water dispenser is provided with a water spray hole with the orifice facing the inside of the discharge port, and a filter screen is provided outside the water spray hole. A high-efficiency dust-free dust machine of the present invention is equipped with a water tank and a water pump, which can humidify the crushed soil coming out of the discharge port, reduce the generation of dust, prevent the dust from spreading, and the water spray holes are evenly distributed in the On the sprinkler, the outside of the sprinkler is provided with a filter screen, so that the water sprayed from the water spray hole is more uniform, and the filter screen can prevent dust from blocking the water spray hole, so that the water spray is smoother.