The invention relates to an ultraviolet curing paint, and concretely relates to an automatically sprayed ultraviolet curing paint and a preparation method thereof. A disadvantage of present ultraviolet curing paints is that: the curing process is completed in several seconds, and the large contraction makes the formation of the thick coating to be impossible, so the usage of the paints in the anticorrosion field is restricted. The ultraviolet curing paint comprises the following substances, by weight, 100 parts of an oligomer, 20-50 parts of a monomer, 10-30 parts of a coupling agent, 2-10 parts of an acid anhydride, 1-2 parts of a mixed assistant, 10-30 parts of nanometer silica, 3-10 parts of a photoinitiator, 80-200 parts of a solvent and 100-200 parts of a propellent. The ultraviolet curing paint of the invention, which allows a technical problem of ultraviolet curing paints for the equipment anticorrosion to be solved, has the advantages of good anticorrosion effect, convenient construction, no need of compressed air, realization of the automatic spray, simple preparation method, safety, no pollution, fast curing speed, high production efficiency, high film quality, and excellent coating performance.