Aiming at solving the practical performance problems of CIM/XML which result in the incontinency of the data-structure sharing and the information exchange of the distribution network information model, a specific method of data exchange based on the EXI format utilized in the distribution network information model is presented in order to realize the convenience of the data-structure sharing and the information exchange. In this method, the EXI format is used to encode the CIM/XML. And the CIM model based on the EXI is obtained through three steps:event stream, pre-compression and compression. Furthermore, the performance indexes of the three data-exchange formats:CIM/XML, CIM/E and EXI are also compared and analyzed based on the analysis. The test results show that the EXI information model is much better at reducing the memory consumption and analyzing time consuming than the XML one. Obviously, the EXI model highly improves the data-exchange efficiency of the distribution network information model. Therefore, the EXI information model has the referential significance to the realization of the smart distribution grid information integration. This work is supported by Science and Technology of China Southern Power Grid “Research and Demonstration Application of the Key Technologies of Power Consumption Dispatch Automation based on multi-level dispatch coordination” (No. ZDKJ00000008).