▎ 摘　　要

NOVELTY - Preparing soil conditioning agent comprises (i) preparing composite microbial inoculum; (ii) mixing the composite microbial inoculum with organic matter to obtain mixed material A; (iii) granulating the mixed material A and heat treating to obtain the conditioning agent component A; (iv) preparing graphene oxide composite material; (v) mixing the graphene oxide composite material with expanded vermiculite powder, plant waste fertilizer to obtain mixed material B; (vi) granulating the mixed material B and heat treating to obtain the conditioning agent component B; and (vii) mixing the conditioning agent component A with the conditioning agent component B. USE - The soil conditioning agent is useful for adsorbing soil heavy metals, and adjusting the soil pH, microbial biomass and enzyme activity. ADVANTAGE - The method: prepares soil conditioning agent does not cause adverse effects on the physical structure of the soil and has good application prospects.