The invention relates to a monitor method and a system for a DC power grid demonstration system, the method comprises the steps: the DC power grid demonstration system is partitioned, and the priority of a control area is set; automatic operation scripts of equipment in the control area are combined as an operation mode corresponding to the control area; the DC power grid demonstration system is controlled according to the priority and the operation mode of the control area. The method provided by the invention can monitor the data of stations in the DC power grid, a plurality of operation modes in the system are coordinated and integrated, and full automatic mode operation is realized.