▎ 摘　　要

NOVELTY - Preparing graphene fluorescent nanomaterial comprises adding graphite powder into tetrahydrofuran, uniformly mixing, dispersing the mixture to obtain a dispersion liquid, adding alkali metal and naphthalene to the dispersion liquid, uniformly stirring the dispersion liquid, reacting the stirred liquid, adding halogenated organic solvent to the reacted liquid to obtain a mixed solution, washing the mixed solution to obtain a solid product, and drying. USE - The method is useful for preparing graphene fluorescent nanomaterial (claimed). ADVANTAGE - The method efficiently prepares the graphene fluorescent nanomaterial with good homogeneity, improved fluorescent light emitting efficiency, and reduced energy consumption.