The invention relates to a modularized dry separation process for bauxite. The dry separation process comprises a pre-separation process, a main separation process, a bauxite grinding and crushing process, a magnetic separation process, a medium solid recovery process and a dust removal process, wherein corresponding modules are arranged according to different process contents, thus the separation efficiency is increased; the bauxite with a particle size range of 0-80mm can be subjected to multi-stage crushing and separation, thus the recovery rate of the bauxite is increased; the medium solid recovery process increases the utilization rate of dense media, and improves the environment friendliness with the dust removal process. The process realizes efficient dry separation for the bauxite with the wide particle size range of 0-80mm, and is of great importance in efficient development and clean utilization for bauxite resources with a high impurity content and difficult to separate, in dry and water-shortage areas of China.