Abstract: Compared with the traditional component curtain wall, the unitized curtain wall are more complex in the structural design, processing and assembly, and installation process.In the construction process, the control and management of progress, quality, materials, cost, etc.have put forward higher requirements, and the whole process of delicacy management is difficult.The popularization and application of BIM related software products and technologies provide a good technical means for the refined construction management of unitized curtain wall projects.Based on the characteristics and management points of the unit curtain wall project, this paper extends the BIM technology of the unit curtain wall from design to processing production and construction management, providing a valuable reference for the fine management of the whole process of the unit curtain wall project.