The invention belongs to the field of research and development and application of the BIM technology and the Internet of Things technology and particularly relates to a research and development and application method of a steel structure BIM information platform. The application method includes the following nine steps: firstly, performing automatic ID (identity) numbering on TEKLA model components by a deepening model according to a specified encoding rule, then importing a TEKLA model into BIM three-dimensional model software NAVISWORKS, and then putting a BIM three-dimensional model into the BIM information platform; secondly, integrally importing component information in the TEKLA software into the BIM information platform in a data stream form, then mapping data information of the components onto the model components in the BIM information platform one by one, and the like. By the method, the real-time status of a three-dimensional building real-time schedule model and any steel component of a project can be searched anytime and anywhere, so that next-step decision analysis and control are performed on the project.