It is an important promotion direction of BIM technology currently to realize the transformation of engineering design from 2D to 3D mode. Based on the Revit software, this paper studies several key technologies affecting the application of BIM forward design in engineering practice. The paper proposes main points of project management guidelines suitable for BIM forward design, including optimization of ISO management, design coordination committee nodes, BIM leaders and advanced training of BIM, etc. The key points of compiling enterprise technical standards suitable for BIM forward design are also put forward, including model management, design process and three-dimensional design method. A forward design collaborative management platform construction method is proposed based on relational database and file server for digital-analog separation. Finally, the authors develop a building structural design system named GSRevit based on Revit platform, which is functioned with quick modeling, direct calculation and automatical drawing.