Since the output impedance of the inverters and common connection point areSdifferent, for multi-inverter parallel micro-grid system, the application of traditional droop control method will lead to increased circulation andSuneven distribution among paralleled power inverters. In this paper, firstly, traditional droop control method and the impact of output impedance are analyzed. Then it finds out the inherent limitations of the conventional droop control scheme. So to overcome the shortcomings of traditional droop control method, it introduced resistive virtual impedance , both changes the properties of equivalent output impedance and brings précised power sharing of the parallel-operated inverter in Microgrid. Additional of voltage fed back in traditional droop control can solve voltage deviation. Simulation results demonstrate that the control strategy is correct and effective.