The invention relates to the technical field of protective films, in particular to a frosted anti-dazzle protective film and a preparation method thereof. The frosted anti-dazzle protective film comprises a protective film layer, a frosted anti-dazzle coating layer, a base material layer, a bonding layer and a strippable film layer which are arranged in sequence from top to bottom, wherein the upper and lower surfaces of the frosted anti-dazzle coating layer are respectively adhered to the lower surface of the protective film layer and the upper surface of the base material layer; the upper and lower surfaces of the bonding layer are respectively adhered to the lower surface of the base material layer and the upper surface of the strippable film layer; the raw material of the frosted anti-dazzle coating layer adopts a mixture of a heat curing acrylic resin hardening liquid and a light curing acrylic resin hardening liquid with the ratio of the heat curing acrylic resin hardening liquid to the light curing acrylic resin hardening liquid being 1:(1-5). The frosted anti-dazzle protective film has a frosted effect and a good anti-dazzle effect, cannot produce problems of bright specks and turning white, can further improve light transmittance, guarantee the fidelity of images, and enhance the user experience.