Considering the unequal sharing of reactive power and the circulating current caused by the difference of line impedance of paralleled inverters, an improved droop control strategy based on adaptive compensation of reactive power is proposed. On the basis of the traditional voltagereactive power droop control, reactive power deviation is introduced as the compensation amount. After the adaptive adjustment of reactive power, it can effectively improve the accuracy of reactive power sharing and achieve great suppression of circulating current. The improved droop control is verified by the MATLAB/Simulink simulation and NI PXIe1071 experimental platform.