Abstract: In response to the weak guidance of production plans and the low efficiency and quality of plan preparation in current railway freight dispatch, this paper took the main freight channel as the business scenario, designed an integrated preparation system of production plan for railway main freight channels, and studied its key technologies to implement full process management of transportation activities such as plan assistance preparation, plan execution monitoring, plan fulfillment analysis, empty car utilization analysis, and comprehensive traffic flow analysis. The effectiveness of the system has been verified through its application on the Tang (Shan) Bao (Tou), Wa (Tang) Ri (Zhao), and Hao (Le Bao Ji) Ji (An) lines, provided technical support and practical experience for optimizing the capacity of railway freight channels.