The invention relates to an energy optimization system and method for a rail transit station. The energy optimization system is used for achieving electric energy optimization of at least one rail transit station. The method includes the steps that a collecting device collects power utilization data of the rail transit station and uploads the power utilization data to a station end server, and thestation end server sends the acquired power utilization data to a section electric energy controller for managing the rail transit station, so that the section electric energy controller achieves electric energy optimization of the managed rail transit station. By the implementation of the energy optimization system and method for the rail transit station, the energy optimization in rail transitcan be achieved, and the energy utilization rate is improved.