Abstract: To solve the problem of locomotive dispatchers not being able to accurately grasp the real-time operation of locomotives, this paper designed a refined locomotive dispatching management system based on locomotive operation trajectory. The system revolved around locomotive operation businesses such as locomotive routing, maintenance, and maintenance. Through the technologies such as collection and verification of multi-source data, the establishment of locomotive operation trajectories throughout the entire lifecycle, it achieved functions such as automatic generation of locomotive operation trajectories, automatic drawing of turnover maps, automatic calculation of locomotive distribution, overload warning, and automatic statistics of locomotive operation. The application shows that the system improves the efficiency of locomotive operation and provides technical support for improving railway transportation productivity.