The invention discloses a UV-cured self-repairing type polyurethane acrylate coating and a preparation method thereof. The polyurethane resin coating is prepared from, by mass, 20 to 35 parts of diisocyanate, 40 to 55 parts of polymer polyol, 3 to 5 parts of a micromolecular diol chain extender, 5 to 12 parts of a functional end-capping reagent composition, 0.03 to 0.05 part of a polymerization inhibitor, 0.05 to 1 part of a catalyst, 0.5 to 3 parts of a photoinitiator, 0.5 to 2 parts of other auxiliaries, 10 to 20 parts of a diluting monomer and 60 to 100 parts of a solvent. The UV-cured polyurethane acrylate is flexible in structural design, the functional end-capping reagent adopts a composition containing three groups, namely furfuryl, maleimide and acrylate, and the furfuryl and the maleimide can form a dynamically reversible Diels-Alder covalent bond, therefore, the UV light-cured polyurethane acrylate coating prepared by the preparation method disclosed by the invention not only has higher glossiness and transparency, but also has better tensile strength, hardness and wear resistance, and also has good self-repairing performance.