Abstract: The simulation technology of computer have be extensively applied and generalized in the experiment teaching with the continual progress of technologyTaking the case of the simulation system of 300 MW turbine-generator in the School of Energy and Power Engineering of HUST as an example，this paper introduces the application survey of the simulation technology of turbine-generator DCS and the fault simulation for thermodynamic system of power plant and giving the corresponding solution on the simulation system of 300 MW DCSIt detailedly introduces the system composition，fault simulation process and corresponding solutionIt provides an reference for teaching application by simulation system in education institutions of power