The invention discloses a simulation system of a microgrid. The simulation system of the microgrid comprises a power supply simulation module, a load simulation module, a switch simulation module, a receiving module, an analysis module and an output module, wherein the power supply simulation module is used for simulating an electric energy output device in the microgrid, the load simulation module is used for simulating an electric energy consumption device in the microgrid, the switch simulation module is used for simulating the switch, connected into the microgrid, of the electric energy output device and the switch, connected into the microgrid, of the electric energy consumption device, the receiving module is used for receiving a microgrid control strategy input by a user, the analysis module is used for analyzing the control strategy into control commands to control the power supply simulation module and the load simulation module to change operating parameters and to control the switch module to execute corresponding on-off actions, and the output module is used for outputting a trend distribution diagram formed after the microgrid executes the control strategy. Through the provided universal simulation system of the microgrid, when the study of the control strategy of the microgrid is achieved, the trend distribution of a power grid is obtained simply by inputting the control strategy, and the simulation system of the microgrid is easy to operate.