Abstract: To comprehensively improve the efficiency of train flow sorting and turnover operations in marshalling yards, this paper adopts workflow technology to design and implement an integrated control system for marshalling yard operation collaboration. This system focuses on implementing unified plan approval and centralized process monitoring for train receiving/departing and cross-yard transfer operations. It standardizes and digitizes the transmission of operation instructions and communication messages. Manual track occupancy boards are replaced with electronic ones that automatically update display information in real time. The system enables efficient, standardized workflow-based collaboration among multiple posts and delivers visualized centralized monitoring of all station operations.The application at the marshalling yards of Lanzhou Railway Bureau shows that the system significantly improves the collaborative efficiency and safety monitoring level of train receiving/departing and shunting operations, provides strong technical support for the overall operational process management of marshalling yards, and advances the digital transformation of marshalling yard production management.