The power share among multiple grid-connected inverters in microgrids is investigated to strengthenthe system robust，especially when power flow varies frequently. Firstly，a model of droop control based multiplegrid-connected inverters is established to deduce proper droop coefficients and analyze statistic stabilities. Then，acontrol strategy which combines with droop control and virtual synchronous generator is proposed to improve systemstability. The proposed control scheme is utilized to increase the inertia and damping for inverters to suppress thefluctuation of frequency，which provides a perfect static stability and minimize shocks. Finally，simulationexperiments are conducted to verify the effectiveness and validity of the proposed strategy.