Dispatching operation order system is one of the important and efficient security measures in the operation management of China's electric power system. To facilitate the dispatching operation and improve the reliability and intelligence of the operation， an intelligent dispatching operation order system based on energy management system（EMS） and dispatcher training simulator（DTS） system is designed and implemented. By using the functions and characteristics of DTS and EMS， the functions of graphic ticketing， simulation preview and real-time state check in the operation process are realized. The actual operation results demonstrate that the system proposed can improve the efficiency of dispatchers and security of power grid dispatching operation.