In order to reduce the impact of distributed power grid integration on the grid and improve the stability of the grid, a virtual synchronous generator (VSG) control strategy combining sliding mode-prediction is proposed. The method adjusts the angular frequency of the virtual synchronous generator (VSG) based on the sliding mode control (SMC) in the outer loop, and introduces the model predictive control (MPC) in the inner loop to control the output current reference value to follow the grid frequency. A simulation model is built on MATLAB/Simulink and compared with the other two control methods, and the simulation results show that the strategy can be used to improve the inertia and stability of the grid and improve the system performance when there is a sudden change in the active load