The invention discloses an efficient and safe flushing device for new materials. The device comprises a smashing box, a spraying plate, a material conveying pipe, multiple groups of crushing rollers,crushing teeth, a water spraying pipe, a booster pump, a water tank, a reflux pipe, a cleaning tank, a water filtering plate, a dryer, a lifting rod, a vacuum cleaner and an aerator; the crushing rollers are mounted in the smashing box, the crushing teeth are uniformly arranged on the outer walls of the crushing rollers, an outlet end of the bottom of the smashing box is communicated with the cleaning tank through the material conveying pipe, the water filtering plate is obliquely arranged in the cleaning box, and the cleaning box is communicated with an air blower; the water spraying pipe isarranged at the bottom of the water tank, the spraying plate is arranged at an outlet end of the water spraying pipe and mounted in the top of the water tank, and the bottom of the water tank is provided with a sediment slide-out plate. The device recycles water, resources are saved, the cost is reduced, screening of the new materials is facilitated, the work efficiency and effect are improved, the structure is simple, and convenience is provided for use and popularization.