In view of the problems of different manufacturers and application technology routes of distribution network graph data, the expression mode is very different, maintenance and application efficiency are low, etc., a graph data sharing system based on the power supply topology model of the whole network has been established. First of all, the overall framework of the graphics and model data sharing system is built, and the software and hardware configuration required by the system is given. A graphic model data sharing system information and graphic model interaction model is proposed. The graphic model interaction is based on the data exchange format of the combination of CIM/SVG to realize the decoupling and transparent exchange between applications. Then, establish a graph and analog data sharing model based on the power supply topology of the whole network to realize PMS2.0, distribution automation, and standardization of graphs and modules of the electricity collection system and storage. Finally, practice shows that the application of research results can help realize the sharing and integrated application of graphics and model data, and improve maintenance efficiency.