Abstract: In order to solve the contradiction between the power distribution accuracy of each micro-source and the voltage stability of the busbar in DC microgrid,a nonlinear droop control strategy based on discrete consistency algorithm is proposed. According to the influence of line impedance on the control effect,power distribution accuracy and busbar voltage stability are balanced by the curve of nonlinearly varying droop resistance,and the discrete consistency algorithm is used to adjust the voltage of each micro-source,to reduce the voltage drop of the busbar voltage. Simulation results by MATLAB/Simulink demonstrate the effectiveness and superiority of the proposed nonlinear droop control strategy based on the consistency algorithm.