Abstract: To tackle the issues of data silos, low collaboration efficiency and inadequate intelligence in the design of outdoor comprehensive pipelines for railway stations, this paper developed an outdoor comprehensive pipeline design system for railway stations based on data collaboration. The study adopted a separated front-end and back-end architecture and utilized pipeline data models together with the graphic-data bidirectional synchronization mechanism to realize real-time sharing and consistency maintenance of design deliverables. It proposed a conflict detection and coordination mechanism, set the detection results as the precondition for data submission, and shifted the focus of conflict control forward to the design phase. The study developed the system through secondary development on AutoCAD and integrated five functional modules to support multi-disciplinary collaborative work. Engineering applications show that the system has favorable engineering applicability and reliability, improves the efficiency of collaborative design and the quality of deliverables, and provides a feasible technical path for the digital design of pipelines in railway stations.