▎ 摘　　要

NOVELTY - Method of assisting in preparation of graphene by liquid nitrogen, involves placing wormlike graphite in liquid nitrogen, stirring, volatilizing liquid nitrogen and obtaining graphene powder. USE - Method of assisting in preparation of graphene by liquid nitrogen. ADVANTAGE - The method efficiently, safely, economically and rapidly provides graphene having high quality, oxygen content of less than 8% and G peak intensity ratio of less than 0.8, without affecting the environment.