The wood powder crusher is a new type crushing machine used to produce wood powder. It is characterized by less investment, low energy consumption and high productivity and convenient maintenance. The wood powder crusher is particularly suitable for processing wood powder for cultivating edible fungi. It is composed of chipper device, crushing device and fan device. The particle size of the chipped wood grain is small, and the material can be crushed without drying and the raw materials can be bamboo, thatched, cornstalks, sorghum stem, pine, poplar, china fir, etc.