In recent years， modern information technology has been widely applied in the construction field. Among them， Building Information Modeling (BIM) technology plays a crucial role in building structure design. By integrating information from multiple disciplines， BIM technology provides excellent efficiency and accuracy for building structure design. In the traditional building structure design work in the past， designers often encountered problems such as information silos， complicated design changes， and difficulties in collaborative work. Since the introduction of BIM technology， it has not only enabled the creation of 3D visualized structural models but also allowed for real-time structural analysis and optimization， thereby effectively improving the quality and efficiency of structural design. This paper analyzes the application of BIM technology in building structure design methods， summarizes its technical characteristics， design processes， and optimization measures for design methods， which can serve as a reference for peers.