The invention provides a method for establishing a power distribution network operation situation information model. The method comprises the following steps: obtaining intersection service of sub-services of a power distribution network; determining a range of power distribution network situation information; obtaining a relationship between data demands of the sub-services and data and a message interaction method of the operation situation sensing information; determining a basic principle and overall technique architecture of the operation situation of the power distribution network; modeling the operation situation information of the power distribution network; and obtaining the power distribution network operation situation information model. The method provided by the invention is a basic supporting technical link of the intelligent power distribution network and is the technical problem that is to be solved in the development of the intelligent power distribution network technology, and has become the 12th Five-Year science and technology planning and the 863 research framework of the Ministry of science and technology of the State Grid Corporation of China. The direct and indirect benefits after promotion are very huge and are premise and basis for the application of other intelligent power distribution technology. The breakthrough of this technology greatly promotes the development of the intelligent distribution network technology.