“In the field of Building Information Modeling (BIM), experts introduce semantic web technology based on the Industrial Foundation Class (IFC) standard to achieve heterogeneous data integration and sharing. Introduce semantic modeling methods through algorithm analysis and model transformation, and illustrate with the example of a two-story steel frame factory building structure. The case practice has demonstrated the feasibility of the semantic modeling method based on IfcOWL ontology, providing an effective solution for sharing and integrating multi-source heterogeneous information in buildings, and effectively improving the intelligence level of building information management.”