UV-curable hard coating composition, using this hard coating layer is started with respect to the formation method that is excellent stain resistance, this polarizing plate, and one time of coating with the middle layer, the hard coating layer and the stain layer formation. UV-curable hard coating composition according to the present invention is based on the total composition of 100 parts by weight, the ultraviolet curable resin 15 to 45 parts by weight of a reactive fluorine-containing compound 0.01 to 3 parts by weight of an acrylate compound in the surface-treated inorganic nanoparticles 5-35 parts by weight, the photopolymerization initiator 1 to 5 comprises a base film soluble in the solvent and residual parts by weight. UV-curable hard coating composition according to the present invention are excellent in adhesion, transparency, scratch resistance and stain resistance of the base film to be able to form an intermediate layer, a hard coat layer and the stain layer on the base film by one coating, rainbow phenomena can be prevented and, even when the saponification process to a substrate film such as a TAC film, there is an advantage not have optical properties, physical properties and damage of the stain resistance before and after the saponification treatment.