The invention relates to yellowing-resistant and bright UV paint, and belongs to the technical field of coatings. The paint comprises the following components in parts by weight: 35-50 parts of urethane acrylate, 15-25 parts of ethyl ester, 8-12 parts of butyl ester, 2-5 parts of a photo-sensitive initiator, 11-17 parts of a UV monomer, 0.4-1 part of a leveling agent, 8-13 parts of cellulose acetate butyrate, and 1-3 parts of a fluorescent brightener OB-1, wherein the fluorescent brightener OB-1 is subjected to the following modification treatment steps: S1: adding the fluorescent brightener OB-1 into water, and performing ultrasonic dispersion for 10 min; and S2: under the condition of uniform-speed stirring, adding water glass, then dropwise adding concentrated sulfuric acid to adjust pHto 5-7, then performing heating in a water bath to 40-50 DEG C, performing heating at a constant temperature for 4-6 h, performing vacuum filtration after the reaction is completed, performing dryingat 70-80 DEG C for 8-10 h, and performing calcination at 300 DEG C for 8-10 h. The paint has the effect of improving yellowing resistance in the later stage.