The invention relates to a control method for reactive power sharing of parallel distributed generation. The control method comprises the following steps: calculating voltage drops of distributed generation power transmission lines and adding the voltage drops to reactive droop control; compensating the voltage drops of the power transmission lines with the voltage compensation quantities of the power transmission lines and improving the distribution accuracy of reactive load by the distributed generation; measuring voltage amplitude values of distributed generation access points, and feeding back the voltage amplitude values of various distributed generation access points to the reactive droop control, and effectively tracking voltage change of the distributed generation access points; and carrying out proportional-integral (PI) adjustment on the voltage compensation quantities of the power transmission lines and the compensation quantities fed back by the voltage amplitude values to obtain the compensation quantity of an initial value of a reactive droop curve, translating the droop curve and adjusting a stable operating point of the system, so that the voltage amplitude values output by the parallel distributed generation are equal. The reactive power distribution problem of the parallel distributed generation is improved; reactive circulation between the parallel distributed generation and the parallel distributed generation is reduced; and a micro-grid runs relatively efficiently and stably.