With the wide application of BIM technology in the construction stage of projects, the traditional method of BIM turning over after the determined field layout design scheme is no longer to embody the application advantages of the BIM technology. In order to give full play to the BIM technology in the layout and optimization of construction site, our team in China Construction Eighth Engineering Division has realized the quick and efficient layout of construction site based on the secondary development of Revit, which improves the efficiency of site layout in practical engineering application. At the same time, the function of optimization analysis is also developed to provide a way to optimize the design scheme of field distribution.