Processing technology for decorative surface of composite board

The invention belongs to the technical field of plate processing, and particularly relates to a composite plate decorative surface processing technology which comprises the following specific steps: a base layer preparation step: a central groove is formed in a base layer, the inner depth of the groove is 1.5-2.5 mm, the side wall thickness of the base layer relative to the groove is 0.3-0.5 mm, and the base layer is cleaned and leveled; a high-precision laser etching step: performing three-dimensional scanning on the texture of the natural marble or granite by adopting a high-definition digital scanning technology to obtain high-resolution original texture data; and obtaining texture data and the like. According to the processing technology for the decorative surface of the composite board, on the basis of high-definition digital scanning and high-precision laser etching technologies, nano material enhancement and light and shadow layer treatment are combined, high simulation of textures, improvement of boar