Preparation method of phellinus igniarius fine powder

The invention discloses a preparation method of phellinus igniarius fine powder, wherein the preparation method comprises the following steps: 1, arranging and exposing collected phellinus igniarius to the sun until water content of the phellinus igniarius is 11%, so that the phellinus igniarius is dried; 2, slicing the dried phellinus igniarius, and primarily crushing the sliced phellinus igniarius by virtue of a screen crusher of 20 meshes at low temperature; 3, controlling temperature of the crusher, applying a temperature inductor on the crusher, and controlling the crusher to automatically cut off power supply when a working cavity is at 40 DEG C; 4, conducting fine grinding by virtue of a sifter of 150 meshes of after primarily crushing at low temperature; 5, after fine grinding, sterilizing through ultraviolet radiation; and 6, drying and packaging the sterilized phellinus igniarius fine powder, and filling the packaged fine powder in capsules or tableting the fine powder. The preparation method disclo