▎ 摘　　要

NOVELTY - A magnetic function graphene composite material is prepared by mixing ethylenediamine and water, adding graphite oxide and acetylacetone iron, subjecting mixture to ultrasonic dispersion, heating the mixture, washing obtained residue, and drying. USE - Method of preparing a magnetic function graphene composite material. ADVANTAGE - The method is simple, utilizes easy to obtain raw materials, can be applied to industrial production, and prepares product having paramagnetic property, high saturation magnetization, uniform small grain distribution and good crystallinity.