Abstract: This paper combined the current development status and trends of heavy haul railway at home and abroad, and based on the research on the intelligent requirements of heavy haul railway in transportation management, equipment application, safety management, etc., proposed the overall architecture and data middle platform of intelligent heavy-duty railways "N+1+3", and provided typical business application directions. The research results can provide reference for the digitalization, intelligent planning, design, and implementation of heavy-duty railways.