Abstract: It is often a non-intuitive and tedious task to develop mixed reality(MR) applications due to the difficulty of accurate 3D registration and the inconvenience of virtual 3D model creation.In this paper,we propose a novel integrated mixed-reality 3D authoring tool.In order to achieve accurate registration with high geometric consistency,both natural features and artificial markers are employed and combined for robust structure-from-motion computation.In order to efficiently construct virtual objects with accurate registration,the proposed authoring tool is integrated into a commercial package of 3D digital content creation.The experimental results demonstrate that the proposed authoring tool can achieve the objective of efficient virtual model construction and accurate registration.