▎ 摘　　要

NOVELTY - Heavy metal ion adsorption material comprises first porous substrate and electrospun fiber membrane is provided on surface of the first porous substrate. The electrospun fiber membrane contains chitosan and/or non-water-soluble chitosan derivative. USE - Heavy metal ion adsorption material is used in soil pollution control (claimed). ADVANTAGE - The heavy metal ion adsorption material has low cost, simple operation, realizes the adsorption of heavy metal ions, solves the problem of material recovery and reuse after adsorption, achieves safe, fast and efficient adsorption of heavy metal ions.