▎ 摘　　要

NOVELTY - Preparing an iron-based material, involves mixing and reacting an iron oleate, a first solvent and herba elephantopin extract, removing the first solvent to obtain a nano-iron suspension, adding polylactic acid and a second solvent to the nano-iron suspension to react and removing the second solvent to obtain a solid, which is the iron-based material, where the first solvent is an alcohol solution, the second solvent is dichloromethane, trichloromethane or dichloroethane. USE - Method for preparing an iron-based material that is utilized in soil pollution remediation. ADVANTAGE - The method enables to fully utilize the steric hindrance effect and fat solubility of branched chains of iron oleate, the biodegradability of polylactic acid, and reducibility of herba elephantopin extract to obtain the iron-based material with high dispersion and corrosion inhibition functions. The interaction between polylactic acid and nano-iron improves the ability of the material to remediate heavy metal and organic polluted soil. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for 1. the iron-based material, which is prepared by the method; and 2. a soil pollution remediation method, which involves: a. adding soil to be restored, the iron-based material and a microbial agent to a stirring device and stirring to obtain a restored soil material containing microorganisms; and b. spreading the restored soil material, planting the vegetation and collecting soil after the vegetation is cultivated, to obtain restoration soil.