The invention discloses a method for generating a PLC physical topological diagram and line information between nodes and a device thereof. The method for generating a PLC physical topological diagram comprises steps of obtaining the GPS coordinate of a node, obtaining the layer number of the node in a network according to the IP address of the node, and generating a power line carrier communication network physical topological diagram according to the GPS coordinate and the layer number of the node in the network and with the combination of an electrical map. According to the method and the device, the physical topological diagram is generated through the physical position and the logic position of the node. Through the physical topological diagram generated in the invention, the electric meter distribution of a local zone area can be rapidly and visually understood, and the visual management of a voltage power line carrier network is realized.