Abstract:At present, the mapping products of ancient buildings are mainly presented in two ways: line drawing and 3D laser scanning images. By the project of Yangxin Hall, this article provides a detailed explanation on technical control of line drawing products such as drafts, official drawings and CAD drawing files, as well as 3D laser scanning products such as 3D point clouds and 2D ortho images. For architectural heritage, the demand for mapping products is different from that of design and research institutions. Starting from engineering practice, this article aims to provide reference for specialist in heritage institutions.