In the distribution automation system, the distribution network structure is complex, and devices, graphics and models change frequently. There are some difficulties of graphics and models management in the distribution of automation operation and maintenance. A multi-version hierarchical subscription mechanism method based on graphics and models fine change is presented. Through the unique source distribution network equipment transaction management, data and topology changes are hierarchically subscribed. Multi-version database management mechanism is used to build device data structure. By quickly building the hierarchies and topologies between devices, matching and updating the distribution graphics and models, the correctness of distribution automation system graphics and models can be improved comprehensively, and the maintenance efficiency of the graphics and models can also be improved, which ensures the application requirements of research and analysis based on distribution network models.