▎ 摘　　要

NOVELTY - The preparation method of aqueous UV fluorescent ink involves uniformly mixing 15-35 %mass graphene quantum dot, balance amount of water, 20-55 %mass aqueous resin, 3-5 %mass surfactant and 20-40 %mass alcohol and ultrasonically dispersing for 5-10 minutes. The alcohol is ethanol, isopropanol or ethylene glycol. The aqueous dispersion of graphene quantum dot is 0.01-1 mg/ml. USE - The method is useful for preparing aqueous UV fluorescent ink, which is useful in printing application (all claimed). ADVANTAGE - The method enables preparation of aqueous UV fluorescent ink with excellent anti-counterfeiting properties and low toxicity in an environmentally-friendly manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for aqueous UV fluorescent ink prepared by the method.