The invention discloses a multicolor fluorescence material based on a rare-earth metal organic frame, a preparation method of the multicolor fluorescence material and application of anti-counterfeiting ink. The multicolor fluorescence material is prepared by uniformly mixing rare earth, a nitrate solution, 1,3,5-benzene tricarbonic acid, anhydrous sodium acetate, absolute ethyl alcohol, N,N-dimethylformamide and deionized water to obtain a mixture, placing the mixture in an oven to react at the temperature of 75 DEG C to obtain a reaction product, taking out the reaction product and centrifuging, washing with deionized water and absolute ethyl alcohol, drying, and grinding, wherein the rate earth is yttrium, terbium and europium. The material is synthesized by simple conditions, is high inillumination brightness, and can realize light color adjustment from green to red, a preset anti-counterfeiting pattern with a specific color or mixed color is printed by an ink-jet printer, the printed pattern is hidden in the sun, and the problem that the hiding performance is low in anti-counterfeiting printing is solved. In the anti-counterfeiting verification, the pattern is stimulated by a254 nm ultraviolet lamp, the preset specific color or the mixed color is displayed, and a better anti-counterfeiting effect is achieved.