The invention relates to a method for centrifugally drying non-metal mineral powder by air flow. When the non-metal mineral powder is dried, an air extracting pump is adopted to extract air from an air outlet passage to generate negative pressure in an annulated columnar space; the non-metal mineral powder and hot air are simultaneously absorbed into the annulated columnar space, perform spiral turning flow from the top down in the annulated columnar space, and are discharged from the air outlet passage finally, wherein because the densities of the non-metal mineral powder and the hot air aredifferent, the centrifugal force is utilized to make the non-metal mineral powder and the hot air generate relative movement in the spiral turning flow process, and the moisture in the non-metal mineral powder is quickly evaporated and brought away by the hot air; and in the flowing path of a material, the material and the hot air collide continuously, so the heat exchange is quickened, and the drying effect is greatly improved than that of pneumatic drying.