["Transactions in GIS, Volume 30, Issue 4, June 2026. ", "\nABSTRACT\nAs digital twin technology is increasingly integrated into intelligent operation and maintenance (O&M) for railways, achieving the efficient integration, automated deployment, and dynamic updating of BIM and GIS models has become a key challenge in railway infrastructure automation construction. Existing BIM‐GIS integration methods face challenges such as low automation, inadequate spatial matching accuracy, and poor model loading efficiency. This study proposes a BIM‐GIS integration modeling method based on global–local skeleton constraints. This method defines and extracts a global–local skeleton model as a geometric spatial constraint, automating BIM component layout and assembly. Simultaneously, an intelligent deployment mechanism is established to enable the automated invocation and efficient deployment of components. Verification with real‐world railway infrastructure confirms that the method enhances the automation, spatial accuracy, and efficiency of BIM‐GIS integration, providing strong technical support for infrastructure construction automation.\n"]