The invention provides an anti-fake grating which has a multi-channel discoloration effect. The anti-fake grating comprises a base layer, a grating information layer and a medium layer which are sequentially arranged in a layering mode. The grating information layer is one-dimensional sine relief type sub-wavelength gratings of quasi-reflection volume. The anti-fake grating has the multi-channel discoloration effect, can well combine public fake resisting and specialist recognition, and can effectively improve the anti-fake capability and the application range of an anti-fake label. An anti-fake brand, a gilding film and a composite film are further provided.