Abstract: The metro power dispatching monitoring system is one of the key links to ensure the safe operation of the metro power supply system, and its simulation system is an important means of training related technical personnel. This paper adopted the method of actual power dispatching workstation combined with virtual power supply system to implement the simulation of power dispatching monitoring system. Based on the analysis of the actual metro power supply system, the paper established its mathematical model, calculated the AC and DC power flow, and communicated with the dispatching workstation through the IEC-104 protocol to complete the simulation of the metro power dispatching monitoring system and implement the operating functions. This system has been applied in practice and plays an important role in improving the training efficiency of metro power dispatchers.