Abstract: In island microgrids where distributed power sources(DGs) operate in parallel, virtual synchronous generator(VSG) control is usually used to deal with the problem of insufficient system inertia and damping. However, due to line impedance mismatch, it is difficult for each DG to achieve reasonable distribution of reactive power, and traditional control methods have never been able to solve the contradiction between accurate distribution of reactive power and bus voltage recovery. To address this problem, an adaptive virtual capacitor control strategy is proposed based on the analysis of the power distribution mechanism of parallel VSGs. This strategy combines the reactive power difference and voltage difference output by the VSG into the design of the consistency algorithm, which can adaptively compensate the bus voltage while achieving the control goals of voltage recovery and accurate distribution of reactive power in proportion. Finally, four VSG simulation models are built based on the Matlab/Simulink, and the traditional virtual capacitor VSG control and the introduced adaptive virtual capacitor VSG control are simulated and compared to verify the feasibility and effectiveness of the proposed adaptive control strategy.