Abstract: Limestone powder belongs to bulk industrial solid waste，accounting for 5%～10% of the total mass of sand and stone aggregate. How to ensure ultilization with safety，environmental protection and bulk consumption has become a problem that must be solved for the healthy development of limestone industry. Taking the "soilization" of stone powder in a large limestone mine in Chongqing as an example，it is proved that the "soilization" of stone powder is workable，it is suitable for plant growth，and can keep the soil and water without loss，in line with the requirements of ecological restoration. The successful conversion of stone powder into "soil" is of great significance for the restoration of forest and rock desertification. The "soil" transformed from stone powder can be used as slope green cover soil or goaf backfill soil. Taking mining land into agricultural land，conducting ecological restoration and ecological remodeling，rock desertification remediation can make the original barren ditch wasteland into a suitable for mechanization of high-quality farmland.

Key words: limestone powder, soilization, ecological restoration