▎ 摘　　要

NOVELTY - Graphene preparing device comprises reactant bearing heating table (15) arranged in heating cavity (16), oxygen removing chamber (5) and vacuum pump (14) connected and arranged on one side of heating cavity, and laser galvanometer scanning system (9) arranged at one end of oxygen removing chamber having supporting table carrying a metal plate arranged at other end. The laser galvanometer scanning system scans the metal plate with laser radiation to generate metal plasma. USE - Graphene preparing device. ADVANTAGE - The device improves degree of reduction of graphene oxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the graphene preparing device. Oxygen removing chamber (5) Laser galvanometer scanning system (9) Vacuum pump (14) Reactant bearing heating table (15) Heating cavity (16)