Abstract: Airport airfield lighting engineering is characterized by complex circuit routing, difficult multi-disciplinary coordination, and stringent construction accuracy requirements. This study develops a systematic BIM implementation methodology based on a four-tier architecture comprising the data layer, model layer, application layer, and collaboration layer. The methodology enables full-process integration, spanning parametric modeling of complete circuit paths, multi-disciplinary clash detection, refined cable routing, as well as construction process simulation and schedule monitoring. Practical verification is conducted using the airfield lighting project within the Phase Ⅲ expansion of Guangzhou Baiyun International Airport. The results demonstrate that the proposed methodology significantly enhances multi-disciplinary collaboration efficiency, effectively reduces design changes and on-site rework, and achieves visualized and refined construction process control. This study provides a viable pathway and practical reference for the digitalization and lean construction of airport airfield lighting projects.