Functional master batch as well as preparation method and application thereof

The invention discloses a functional master batch as well as a preparation method and application thereof, and the functional master batch comprises the following components in parts by weight: 20-90 parts of matrix plastic, 5-80 parts of powdery colloid photonic crystal, 1-10 parts of a compatilizer, 0.5-5 parts of a diffusant, 0.3-1 part of an antioxidant, 0.1-0.5 part of an ultraviolet light absorber and 0.2-1.0 part of an anti-hydrolysis agent, wherein the light transmittance of the matrix plastic at the wavelength of 400-800 nm is greater than or equal to 70%, and the molding temperature of the matrix plastic is less than or equal to 270 DEG C; the powdery colloidal photonic crystal comprises nano microspheres and carrier resin. Compared with the prior art, the functional master batch and the three-dimensional micro-nano structure containing the photonic crystal have the advantages that light with specific angles and specific wavelengths can be selectively regulated and controlled to form corresponding s