With the integration of renewable energy resources, electrical vehicles, multiple energy coupling equipment and other new elements, distribution network has new characteristics, including diversification, high uncertainty and complexity. This paper reviews the research on the planning methods for new equipment integrated distribution network. Firstly, the simulation approaches of generation power and load power used in distribution network planning are investigated. Secondly, the distribution network planning models considering different factors are introduced. Several optimization strategies and solution algorithms for distribution network planning are also reviewed. Finally, with considering the state-of-the-art and the developments of AI technology and energy internet, the prospect of distribution network planning theories and technologies under new conditions are presented.