The invention provides multi-response fluorescent ink and a preparation method. The multi-response fluorescent ink comprises, by weight, 0.5-5 parts of
rare earth metal salt, 1-5 parts of organic ligands, 50-70 parts of organic solvents, 20-30 parts of
polymer resin and 0.1-2 parts of auxiliaries, wherein the
rare earth metal salt is selected from one or two of
europium salt and
terbium salt, theorganic ligands are beta-
diketone molecules, the
polymer resin is selected from one or more of
acrylic resin,
epoxy resin,
ethylene resin and
polyurethane, and the auxiliaries are selected from dryingcatalysts, diluents,
viscosity reducers, thinners, antioxidants, anti-gelling agents,
defoaming agents, surfactants, anti-pitting agents, slipping agents and plasticizers. The fluorescent ink presents different fluorescent colors under the
ultraviolet condition of different wavelengths, can present multicolor
fluorescence after being stimulated by different substances, and has the advantages of high anti-counterfeiting level and strong anti-counterfeiting capacity.