Abstract: The establishment of hybrid substation simulation system of rail transit can provide an effective training system for substation inspection workers. Based on the establishment of three-dimensional model and mathematical model of electrical equipment in hybrid substation,by simulating the load of the station and the train, combining with the operation of the power dispatching system, this paper calculated the power flow of the substation to get the electrical quantity of each electrical equipment, so as to simulate the implementation of the three-dimensional browsing and operation of the electrical equipment, as well as the remote control, station control and near control of the power supply system.The hybrid substation simulation system of rail transit has the characteristics of repeatable operation, no cost of materials and no danger, etc., which can play an important role in improving the training efficiency of trainers.