Abstract: Aiming at existing problems in China Railway 12306 Internet Ticketing and Reservation System (abbreviated as 12306), including a single advertising recall mode, slow material loading speed, and insufficient effect tracking capability, this paper designed an intelligent advertising delivery system. It established a multi-channel advertising recall mechanism through client-side Software Development Kit (SDK) integration and server-side Application Programming Interface (API) integration, and realized diversified advertising delivery sources. Combined with client local cache and Content Delivery Network (CDN) cache, the system constructed a multi-level cache architecture for material files, and supported multi-dimensional targeted advertising delivery functions such as regional targeting and user labeling, and realized full-link data tracking covering advertising delivery, exposure and post-delivery effect analysis through real-time monitoring. It provides a technical solution for precise advertising marketing for 12306, improves the operational capability and resource utilization efficiency of railway internet media, and its technical framework and business model offer reusable references for the digital marketing of internet media in the transportation industry.