Abstract: With the development of demand response technology, the technical solution proposed only from the standpoint of distributed generation is not well adapted to the current form, and it is necessary to fully consider the characteristics of the load and improve the shape of the network. To this end, the concept of self-consistent distribution unit is proposed, and the definition of self-consistent distribution unit is elaborated, and the methods, principles and indexes of its classification and division are studied, and the final division is based on simulation. Finally, the development objectives and future research directions of related technologies are discussed and prospected to provide some thoughts and references for the development of smart distribution network planning theories and technologies under the new situation.