The invention discloses a power distribution network graph and model management system and a power distribution network graph and model management method based on CIM/E and CIM/G. The system comprises two systems including an operation system and a debugging system, wherein the operation system is a power distribution automation system for distributing the actual use of a user; and the operation system and the debugging system are communicated through a TCP/IP protocol. According to the system and the method provided by the invention, the CIM/E is adopted for describing a network distribution full model and an incremental model; the graphs and the models are managed through processes such as remote retrieval, graph and model commissioning and graph and model backspacing; and the CIM/G is adopted for describing network distribution graphs, and and the past, present and future model management is realized. The system and the method provided by the invention have the advantages that through adopting a management mode of the double systems including the debugging system and the operation system and utilizing the high-efficiency exchanging of GIM/E models and CIM/G graphs between the two systems, the graph and model updating and backspacing management is realized, and the safety and the accuracy of the distribution network graphs and models are improved.