A representation conversion method for power distribution network single-line diagram network structure characteristics comprises the steps of establishing a standard power distribution network single-line diagram sample library, and establishing a node sequence of each sample power distribution network single-line diagram according to an electrical connection relationship between power distribution network devices of samples in the sample library; establishing a generative adversarial network model, wherein the generative adversarial network model comprises a generator and a judger; The generative adversarial network model is trained by learning the standard power distribution network single line diagram sample library; establishing a node sequence of the power distribution network singleline diagram to be characterized and converted; And converting the node sequence of the single line diagram of the power distribution network to be represented and converted into required network structure feature representation through conversion of the generative adversarial network model. Therefore, standardized conversion and characterization of the single line diagram of the power distribution network can be effectively realized, and the generation and updating efficiency of the single line diagram is improved.