▎ 摘　　要

NOVELTY - Method for preparing a biomaterial, involves (a) performing surface sulfonation treatment of carbon fiber reinforced polyether ether ketone composite material to obtain a carbon fiber reinforced polyether ether ketone composite material and (b) immersing the sulfonated carbon fiber-reinforced polyether ether ketone composite material in gel precursor liquid, performing pre-crosslinking treatment to obtain a pre-crosslinked carbon fiber reinforced polyether ether ketone composite material, and grafting the pre-crosslinked carbon fiber reinforced polyether ether ketone composite material by UV radiation to obtain the biomaterial with a three-dimensional gel structure surface, where the gel precursor liquid comprises methacrylate esterified gelatin, polyethylene glycol diacrylate and graphene oxide-hydroxyapatite composite material. USE - The method is useful for preparing a biomaterial for preparing bone graft materials, bone fixation materials and/or bone repair materials (all claimed). ADVANTAGE - The biomaterial has excellent antibacterial and osseointegration properties.