▎ 摘　　要

NOVELTY - Biological reduction preparation of graphene comprises dispersing 8-12 g graphene oxide powder in 130-150 g deionized water to obtain an aqueous solution, vortex stirring while adding 12-14 g magnesium hydroxide, adding 16-19 g methionine and 22-24 g tryptophan, adding 8-11 g maltose, carrying out ultrasonic microwave synergistic processing at 200-300 W for 40-70 minutes, centrifuging, and taking precipitation. USE - Method for biological reduction preparation of graphene (claimed). ADVANTAGE - The method prepares a high degree of reduction of graphene, is simple and environment-friendly, and prepares a high conductivity graphene.