In response to the problems of non-standard data flow, missing transfer processes, and data disconnection caused by system updates in the management of distribution network equipment changes in new-type power system, this paper studies a distribution network equipment change management system based on multi-system interaction. First, based on the topology analysis of equipment changes in the distribution network, the overall architecture of the system and the software and hardware configurations at each level were constructed. Then, a distribution network equipment change library model was established for unified storage of data, and a graph data forwarding mechanism between multiple systems was constructed to optimize the management process of distribution network equipment changes. Finally, the effectiveness of the proposed system was verified through practical application in a city-level power company. The proposed system can improve the work efficiency and correctness of device change management by about 34.4% and 6.9% respectively, which effectively enhances the operation and maintenance efficiency of the distribution network.