In the context of deepening global climate governance, the green and low-carbon transformation of the civil aviation industry has become a strategic choice to achieve the goal of carbon neutrality. As the core carrier of civil aviation infrastructure, airports play a strategic fulcrum role in the industry's emission reduction process. Taking Beijing Daxing International Airport (BDIA) as an example, this study systematically analyzes its technical application in the integrated development of natural ecology, intelligent digital operation, and comprehensive transportation and energy resource utilization, and reveals the innovative paradigm and practical path of green development of super-large aviation hubs. This paradigm provides a replicable theoretical framework and practical path for the green transformation of global aviation hubs, and has important demonstration value for promoting the high-quality development of the civil aviation industry.