▎ 摘　　要

NOVELTY - A graphene is biologically prepared by activating Bacillus subtilis strain B168, centrifugally collecting cells, heavily suspending using culture base medium (M9), mixing B. subtilis strain and graphene oxide suspension liquid, adding vitamin K-3 mediator solution, biologically reducing, standing biologically reduced reaction system, centrifuging to obtain graphene, cleaning, depositing, and freeze-drying. USE - Biological catalysis preparation of graphene (claimed). ADVANTAGE - The preparation process is mild, reduces graphene structure defect, maintains original excellent characteristics of graphene, and has quick and short time consumption. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of graphene biological catalysis preparation. (Drawing includes non-English language text).