▎ 摘　　要

NOVELTY - Method for preparing graphene dye, involves (a) adding graphene and dye to aqueous-based coating, and manually stirring and mixing, (b) pouring the mixed slurry obtained in step (a) to a sand mill, adding zirconium oxide beads, turning on the machine, and sand grinding for 2-8 hours, (c) taking the slurry obtained in step (b) from the sand mill, and filtering to remove the zirconium oxide beads, and (d) adding the slurry obtained in step (c) to a vacuum drying oven, vacuuming and maintaining for 2-24 hours. USE - The method is useful for preparing graphene dye (claimed). ADVANTAGE - The graphene dye kills the microorganisms, destroys the cell membrane or cell wall of the microorganism, inhibits the destruction of coating film by bacteria, improves the antibacterial effect of dye for long-term, has excellent antibacterial dustproof effect, UV resistance, high-temperature resistance and strong coloring stability.