Composite flooring and preparation method thereof

A composite flooring, comprising a first composite flooring or a second composite flooring, wherein:

• the first composite flooring comprises, stacked in sequence from top to bottom, a functional composite film, a transparent adhesive layer, a pattern layer, and a substrate;
• and
• the second composite flooring comprises, stacked in sequence from top to bottom, a colored functional film, an adhesive layer, and a substrate, the colored functional film comprising a functional composite film and a printed film B that are disposed through stacking, and the printed film B being in contact with the adhesive layer,
• wherein the functional composite film in the first composite flooring and the functional composite film in the second composite flooring each comprise, stacked in sequence from top to bottom, a glaze layer, a radiation-cured layer, and a transparent polymer film,
• wherein the radiation-cured layer comprises an ultraviolet-cured coating or a polyurethane reactive (PUR) coating;
• and
• wherein the glaze layer comprises a surface glaze layer or a composite glaze layer, the composite glaze layer comprising a surface glaze layer and a bottom glaze layer, and the bottom glaze layer being in contact with the radiation-cured layer.