The invention provides a UV photocurable coating and its preparation method and the thermal sublimation transfer film forming technology using it. The UV photocurable coating includes components: epoxy acrylic resin, special polyurethane acrylate, fluoride modified hexafunctional group Aliphatic urethane acrylate, polyester acrylate, cellulose acetate, xylene, isopropanol, dipentaerythritol pentaacrylate, silicone leveling agent, fluorine-modified polyacrylate, 1-hydroxy-cyclohexyl-phenylmethanol ketone, 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone, ethyl acetate, butyl acetate and toluene. The UV photocuring paint of the present invention is environmentally friendly and has strong adhesion, and the formed coating film has high strength, high hardness, high wear resistance, high weather resistance and high solvent resistance, and is simple to prepare. Using the thermal sublimation transfer film-forming technology of the UV light-curing coating, the process is simplified, the efficiency is high, and the substrate of the decorative coating is completed. The surface has the high performance brought by the UV light-curing coating, which is more beautiful and decorative. Taller and durable.