Abstract: In order to effectively reduce the total energy consumption of train traction in urban rail transit operation, an energy-saving train operation organization optimization system is developed. Based on the overall energy-saving optimization framework for train operation organization, key functional modules including compilation of intensive train operation plan , optimization of train speed profile, configuration of train timetable scale parameter, optimization of energy-saving train timetable, and evaluation of energy-saving effects, etc., are designed. Through adopting technologies such as optimizing of train operation speed profile and energy-saving chart optimization algorithms, the comprehensive management and overall optimization of train operation energy consumption and the utilization of regenerated energy are achieved. The system has been tested and applied in multiple urban rail transit lines. The results show that this system can quickly generate energy-saving optimization plans for train operation organization, significantly reducing the total energy consumption of train traction, and providing a systematic and comprehensive solution for energy-saving optimization of rail transit train operation organization.