▎ 摘　　要

NOVELTY - Producing 3D printing mobile phone backboard comprises (1) transferring the target texture to the outer surface of the plane shell, (2) forming coating layer on the target texture of the plane shell, (3) forming cover bottom ink layer on the coating layer, (4) carrying out high pressure forming on the plane shell to form mobile phone backboard blank, (5) performing 3D printing processing on the outer surface of the mobile phone backboard blank to form pattern, printing at least one layer of matte ink on the outer surface of the mobile phone backboard blank using 3D printing device, and (6) carrying out CNC fine carving, and manufacturing mobile phone backboard finished product. USE - The method is useful for producing 3D printing mobile phone backboard. ADVANTAGE - The backboard has small surface tension, good compatibility between ink components, good fluency, good 3D printing performance, large specific surface area, and strong light refraction and reflection layer, and has pattern with strong sense of layering to achieve the visual effect of light and dark light.