The work aims to take the relevant theories of sustainable design as guidance and the product design of new energy charging pile of Moma Design Group as an example, to effectively reduce the artificial loss during the use of products, and propose intelligent solutions for the charging problem of shared cars. Firstly, the "DfS" (Design for Sustainability) method was used as a guide to build a dynamic user portrait through user interviews, excavate the pain points of traditional charging piles at each stage, and establish the framework of the new energy charging product and service system from the perspective of sustainable design. The design strategy of the new energy charging system was summarized through qualitative and quantitative methods, which guided the design of the new energy charging system, and the design verification was carried out by the sustainability barometer. The design principles of the new energy charging system from the perspective of sustainable design were proposed and an automated new energy charging system was designed based on user requirements to solve the problem of cumbersome process brought by traditional manual charging. The construction of the new energy charging system can promote the deep integration of automation, intelligence, networking and sharing, and realize the intelligent development of urban transportation system.