The invention discloses a scouring device. The scouring device comprises a rectangular framework, wherein the bottom end of the rectangular framework is fixedly mounted on the ground, a rectangular working plate is fixedly mounted on the rectangular framework, an adjustable cutting device is arranged above the working plate, a sliding telescoping device is arranged at one side of the working plate, a scouring mechanism is arranged on the sliding telescoping device, the scouring mechanism is jointly formed by a water tank fixedly mounted on a mounting plate, a round opening formed in the upper surface of the water tank, a water pump located in the water tank, a brush fixedly mounted on the sliding telescoping device, a high-pressure sprayer located above the brush, a spiral telescoping water pipe connected with the water pump and a liquid level sensor located at the upper end of the inner surface of the water tank, one end of the spiral telescoping water pipe is fixedly connected with the bottom end of the high-pressure sprayer, the other end of the spiral telescoping water pipe is inserted into the round opening, and a controller is arranged on a vertical post of the framework. The scouring device has the beneficial effects of simple structure and high practicability.