The semi-wet material crusher is a professional crushing equipment for high humidity and multi-fiber materials. This machine is a new type of high-efficiency single-rotor reversible crusher. It uses high-speed rotating blades to crush fibers with good particle size and strong adaptability to the moisture content of materials. It can be used for milling fermented decomposed garbage or other materials with high moisture content, which has the effect of high efficiency and high energy. The milling particle size can reach 20-50 mesh, which can meet the feed particle size requirements of general fertilizer granulation equipment. The rotor of the equipment has a novel structure, reasonable design, simple operation, and stable operation, which completely solves the problem of crushing organic matter in high humidity (with a moisture content of 25% to 50%). It is a popularization project of national environmental protection applicable technology.