Abstract: Abstract: This article contains the introduction of the background of 3D collaborative design, the module and function of Bentley 3D software factory, and the development of 3D collaborative design process and document management process. It studied a set of standard 3D design process combining with Shanxi Binchang Mining Group Co. Ltd. Xiaozhuang coal mine and coal preparation plant navigation project, and pointed out the shortcomings and future development directions of 3D collaborative design, which provided a reference for the following 3D design project of mine and coal preparation plant.