A control method for a distributed power supply of a power distribution network. The method comprises: acquiring voltage values, active values and reactive values of a plurality of distributed power supply units of a power distribution network; by taking any distributed power supply unit as a target control unit, calculating a reactive adjustment value of the target control unit and/or a non-target control unit according to the voltage value, the active value and the reactive value of the target control unit; and according to the reactive adjustment value, making an upward adjustment or a downward adjustment to the reactive value of the target control unit and/or the non-target control unit, so as to stabilize an output voltage of the target control unit.