The virtual synchronous generator (VSG) control strategy can make the inverter simulate the operation mechanism of synchronous generator, which is beneficial to improve the system stability,it has become one of hot issues of inverter control technology. First, the structure of VSG is analyzed in detail, including the decoupling control of voltage loop and current loop, the droop control of active power and reactive power, and the modeling of synchronous generator, etc. Then, a new VSC control scheme with Washout filter characteristics is proposed. Finally, the simulation results on Matlab verify that the proposed VSG control method is effective and feasible, the new control scheme can improve the frequency and the voltage of microgrid system, and increase the adaptability and the power quality of microgrid. This work is supported by National Natural Science Foundation of China (No. 61304134), the Key Science and Technology Plan of Shanghai Science and Technology Commission (No. 14110500700), and Shanghai Key Laboratory Power Station Automation Technology Laboratory (No. 13DZ2273800).