The Virtual Synchronous Generator (VSG) needs to operate under different grid strength conditions, but it cannot guarantee robust operation. Particularly in a strong grid, it can result in significant oscillations, long adjustment time, and large overshoot. In order to improve the performance of VSG in grid-connected mode, this paper first analyzes the dynamic response of VSG under different short-circuit ratios. Considering its poor dynamic response performance, a zero pole reconstruction VSG control strategy based on a feedforward path(FPP-VSG) is proposed. By setting appropriate controller parameters, the system can have good dynamic performance and a high stability margin under different grid strengths. In conclusion, simulation results confirm the effectiveness of the proposed control method.