The invention discloses a colored filter with a grating structure, which mainly comprises a substrate, a black matrix, a color filter layer, a protective layer and an ITO conducting film and is characterized in that the substrate is covered with a dielectric layer, the refractive index of the dielectric layer is larger than 1.65, the color filter layer is an embedded submicron grating which consists of a metal layer and a low-index dielectric layer, the metal layer is arranged at one side close to the substrate, the low-index dielectric layer is arranged at one side far from the substrate, and the refractive index of dielectric material is smaller than 1.65; and grating units of different colors are obtained by different grating structural parameters. The invention is based on the submicron embedded metal grating structure, has same transmitted spectrum characteristic under TE and TM polarized lights, has high utility rate of luminous energy, improves the purity of output light and can be manufactured in super large breadth.