The present invention relates to an ultraviolet-curable coating composition having excellent iodine resistance, comprising: a carbamate (meth)acrylate oligomer with a functionality degree of 6; a polyfunctional (meth)acrylate monomer including a (meth)acrylate monomer with a functionality degree of 3 or above, a bifunctional (meth)acrylate monomer, and an alkoxylated (meth)acrylate monomer with a functionality degree of 2 or above; and a photoinitiator. The ultraviolet-curable coating composition according to the present invention can form a coating film having excellent stain resistance, adhesiveness, gloss, scratch resistance, and the like, while exhibiting excellent iodine resistance. In addition, the coating composition disclosed by the invention is solvent-free coating, so that the problems of odor, volatile organic substances and viscosity increase generated during coating operation of the original solvent coating can be solved. The coating composition of the present invention can be used as coating for coating the surface of a flooring (e.g., PVC flooring).