Powder surface modificatio and coating machine can be applied to the surface of fine powder from 325 category to 6000 category to improve their property, such as precipitated calcium carbonate, ground calcium carbonate, lithopone, titanium pigment, sericite, fly ash, zinc oxide, ultrafine barium sulfate, precipitated barium sulfate, talcum powder, quartz sand, mica powder, aluminum hydroxide, magnesium hydroxide, brucite, calcined kaolin and washed kaolin.