The grass crusher is compact, with a motor directly connected and full-width side feeding, cooperating with a conveyor for material transport, and high automation. It is particularly suitable for large-scale rough processing of baled alfalfa, licorice, ryegrass, and straw. It features high processing efficiency and low production cost. The machine uses an internal wide rotor with scientifically arranged thick, wear-resistant hammer plates for uniform crushing. It employs imported SKF main bearings, high-precision balanced rotors for smooth operation and low noise. The quick-opening maintenance door allows for timely screen replacement and easy maintenance. The machine has a split thickened screen with a large screening area and long service life.