▎ 摘　　要

NOVELTY - Production of chitosan/carboxymethylcellulose-calcium ion-graphene composite material involves mixing carboxymethylcellulose sodium and graphene oxide in a beaker, adding 150 ml acetic acid buffer, magnetically-stirring, adding 5 ml calcium chloride solution to obtain carboxymethylcellulose-calcium ion-oxide graphene admixture, adding chitosan solution, magnetically-stirring for 1 hour, adjusting pH to neutral with sodium hydroxide, naturally-sedimenting, washing and lyophilizing at -45 degrees C for 24 hours. USE - Production of chitosan/carboxymethylcellulose-calcium ion-graphene composite material used in biological material. ADVANTAGE - The method enables simple and environmentally-friendly production of chitosan/carboxymethylcellulose-calcium ion-graphene composite material.