a carrier comprising a first surface and a second surface opposite to the first surface;

a micro-nano layer formed by a micro-nano structure provided on the first surface of the carrier, the micro-nano structure being at least one of a protruding structure or a recessed structure, wherein the micro-nano layer has optical effects comprising a reflective effect, a refractive effect, and a transmission effect on light;

a reflective layer provided on the micro-nano layer, wherein the reflective layer has functions of reflection, color developing and blocking;

a coloring layer provided on the reflective layer, wherein the coloring layer is configured to display colors in conjunction with the reflective layer;

a decorative layer comprising the carrier;

a functional layer comprising an antenna module, a display module, a touch module, a wireless charging module, an NFC module, a light-emitting module, that include of conductive wires, conductive grids, light-emitting materials and display materials, wherein the reflective layer or the coloring layer is provided, corresponding to the touch module of the functional layer, with an arrow mark to match graphics and text variations of the functional layer; and

a display structure provided on a side of the coloring layer, wherein the decorative layer is provided with a visual window corresponding to a display structure area, allowing information displayed by the display structure to be visible to a user;

the decorative functional film further comprising:

a second micro-nano layer disposed on any surface of the carrier, wherein the micro-nano layer and the second micro-nano layer each exhibit an optical effect, or the micro-nano layer and the second micro-nano layer interfere with each other to form an optical effect; and

wherein the micro-nano structure is at least one of a linear cylindrical lens, a non-linear cylindrical lens, a micro lens, a small short line, a Fresnel lens, drawing lines, or a CD pattern.