▎ 摘　　要

NOVELTY - Method for preparing 3-dimensional (3D) shell structure composite material based on graphene oxide and chitosan, involves (i) freeze-drying graphene oxide aqueous solution to obtain graphene oxide core, preferably, the concentration of graphene oxide aqueous solution is 1-5 mg/ml and (ii) adding aqueous solution of chitosan containing glacial acetic acid to graphene oxide core to adsorb chitosan shell on the outer surface of graphene oxide core, and resulting product is freeze-dried to obtain product. USE - The method is useful for preparing hemostatic material and drug release (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a hemostatic material prepared from the shell structure composite material based on graphene oxide and chitosan.