The stone large plate scanning system is used to collect stone plate images. It can work alone or in conjunction with the grinding and polishing line. The collected images have true colors, realistic textures, clear textures, accurate board surfaces, and diverse formats. They can also measure the outline shape of stone slabs, determine the largest inscribed rectangle, and mark defects and reduce dimensions. The collected images and detection data can be stored on the network and connected to a variety of databases, which can meet the needs of secondary processing of various stone materials to the greatest extent.