The intelligent development of new energy vehicle charging technology is promoting the transformation of the transport energy system in the direction of high efficiency， safety and sustainability. This paper focuses on the construction of vehicle-pile-network integration， discusses the intelligent development of new energy vehicle charging technology such as intelligent power allocation technology，vehicle-network interaction technology，new charging scene support， charging safety protection system， etc.， and points out that at the application level， the family energy management linkage charging system， the public charging station intelligent guidance platform and the cloud battery health management switching mode， to realise the in-depth coupling of charging facilities and the energy internet In order to provide an optimal path of energy scheduling for new energy vehicle charging system.