Abstract: This study addresses the issues of low efficiency and accuracy in the automatic matching of aluminum formwork, which are attributed to the large volume of information in BIM structural models, non-standard modeling practices, and unclear rule constraints. The research focuses on the structural model used during the design phase of aluminum formwork matching. It first analyzes the effective spatial and component information within the model and then establishes corresponding rules for model modeling, classification coding, and collision avoidance strategies. By selecting an engineering case and developing a test plug-in for information extraction and automatic matching, the study validates the effectiveness of the model information and the feasibility of the proposed rules. The results demonstrate that the proposed method significantly enhances the efficiency of BIM automatic matching for aluminum formwork and provides valuable insights and support for related BIM structural model research.