Aiming at the power coupling problem caused by the high impedance ratio between the distributed energy(DG) controlled by the virtual synchronous generator(VSG)and the power grid. In this paper, the power coupling mechanism is analyzed, and the coupling relationship between power and impedance ratio and power angle is established by relative static gain coefficient. A virtual power control technology based on virtual negative impedance is proposed. The virtual impedance is used to calculate the virtual voltage, and the obtained virtual voltage is fed back to the power calculation part to form the virtual power to realize power decoupling. Based on the constraint condition of coupling degree, the specific solution method of virtual resistance and inductance is given. Finally, the simulation model is built by using MATLAB/Simulink simulation software. By comparing with the traditional virtual impedance technology, it is verified that the proposed virtual power control strategy has a significant effect on weakening the coupling between the active and reactive power loops.