Abstract: System design for dispatching and control training simulation based on cloud computing technology is proposed for the inadequacy of the traditional dispatching and control training simulation.In the design,the specific solution of some key technologies have been proposed,such as scenarios construction based on virtualization,graph and model management based on cloud computing,distributed real-time data processing,collaborative simulation based on cloud computing,etc.The system has been pilot applied in control center.Practice shows that the system can achieve the multi-business and multi-scenario simulation in dispatching and control center.Meanwhile,the ability of long-distance interactive coordination of joint simulation is improved,and the performance and efficiency of the simulation are improved as well.The proposed system solves the inadequacy of the traditional dispatching and control training simulation system,and obtains the good application effect.