The utility model provides an anti-fake grating which has the multichannel color-changing effect. The anti-fake grating comprises a substrate layer, a grating information layer and a dielectric layer, wherein the substrate layer, the grating information layer and the dielectric layer are sequentially disposed in a laminated manner. The grating information layer is a sub-wavelength grating with the one-dimensional sinusoidal relief type quasi-reflection size, the sub-wavelength grating is a double-cycle grating which comprises a small-cycle sinusoidal grating and a large-cycle sinusoidal grating, the cycle of the small-cycle sinusoidal grating ranges from 320nm to 420nm, and the cycle of the large-cycle sinusoidal grating ranges from 600nm to 900nm. The anti-fake grating has the multichannel color-changing effect, can well combine public anti-fake identification with expert identification, and can effectively improve the anti-fake capability and the application range of anti-fake labels. The utility model further provides an anti-fake trademark, a hot stamping film and a composite film.