Abstract: By the example of Shanghai Hongqiao railway passenger station, energy management system (EMS) that is used for the centralized scheduling of cold and heat source system, air conditioning system, lighting system, LED display, elevator and other key energy-using systems is introduced.EMS combines of energy management and energy use of large railway terminal station, analyzes energy consumption of equipment by use of advanced data processing and analysis techniques, and promotes the railway energy management department to carry out targeted energy using statistics analysis, balance analysis, performance management, forecast analysis, etc. Energy consumption equipment and facilities data in the large railway terminal station are collected, stored and analyzed through the system to realize classification, disciplines and partition contrast. The ineffective energy consumption and energy saving space in key energy-using system is found out and the energy efficiency is improved. According to the statistical data of the large railway terminal station, the saving energy is expected to more than 15% of statistical total energy by the assessment of EMS.