With the rapid development of the new energy vehicle industry and the support of national policies, new energy trucks are increasingly becoming part of our daily lives. New energy light-duty trucks are commonly used for urban cargo transportation and play a significant role in express logistics. Currently, most new energy trucks face challenges such as short driving ranges, and vehicle lightweighting serves as an effective solution to this issue. This paper, based on the overall structure of new energy light-duty trucks and Broussonetia papyrifera, explores lightweighting approaches for the frame, body, drive motor, and power battery by integrating cutting-edge scientific technologies. It proposes innovative ideas and methods for lightweighting new energy light-duty trucks, providing guidance for their lightweight design.