The line impedance in micro-grid is not pure inductive, and it does not match the capacity of distributed generation, therefore, the active power and reactive power are strongly coupled and the power cannot be distributed according to the capacity. Based on the improved traditional virtual impedance, an adaptive virtual impedance control strategy is proposed to reduce the coupling relationship between the power and distribute the reactive power according to the capacity. However, due to the characteristics of droop control and the utilization of virtual impedance, the voltage and frequency are shifted, so the voltage compensation control and the improved phase compensation control are added to make the output voltage, phase and frequency consistent with the reference value. Finally, the rationality and effectiveness of the proposed control strategy are verified by small signal stability analysis and simulation.