An intelligent multi-agent voltage control method is proposed to deal with voltage regulation challenges brought about by high penetration of distributed generators(DGs)in the DC distribution system(DCDS). The proposed control method is divided into two layers. In the first layer

the bus connected to the AC/DC converter is set as the central point

whose voltage is adjusted to control the voltage of the system. In the second layer

the DCDS voltage is controlled by optimizing the output active power of the DG. Examples have demonstrated the effectiveness and economy of the proposed voltage control method.