The invention discloses a direct-current microgrid droop control method and relates to droop control methods, for solving the problem existing in conventional droop control that micro-source output voltage is decreased linearly along with increase of output current, direct-current bus generates high voltage deviation, and power distribution precision is low. The direct-current microgrid droop control method includes the steps of 1, introducing information of all micro-source output current and important bus voltage through low-speed communication; 2, implementing a linkage mechanism of current limit and current signal sending pause, to be specific, detecting power sent by every micro-source, sending an instruction to cut off a communication output channel switch once detecting that some of the micro-sources is loaded fully to prevent the micro-source from sending its current signal outwards but to allow the same to receive current signal sent from the other micro-sources and continue to generate power compensation and voltage compensation; and sending an instruction to close the communication output channel switch once detecting that the micro-source is not in full load. The direct-current microgrid droop control method improves quality of system voltage and guarantees normal running of the microgrid system even when the micro-sources select unreasonable droop coefficient.