The invention relates to an inorganic sand regeneration method. Through three stages regeneration of machinery, a hot method and re-machinery, new sand is not needed to be added for blending, and other chemical substances are not needed to be added; a whole regeneration technology is low in energy consumption, no secondary water, gas and solid pollution is achieved, used regeneration equipment issmall in occupied area and low in production cost, obtained regeneration inorganic sand is low in sodium oxide content, the strength can be comparable to original sand, and the obtained regeneration inorganic sand can be used directly as facing sand.