Scientists and engineers are working constantly to develop and improve the materials, machines and vehicles that are part of all our daily lives, and keeping abreast of advances in these fields is important to all those engaged in such efforts. This book presents the proceedings of NMMVE 2023, the 2nd International Conference on New Materials, Machinery, and Vehicle Engineering, held in Guiyang, China, from 2 - 4 June 2023. The conference brings together researchers, academics, and industrial professionals from around the world to discuss the latest advancements in the fields of new materials, machinery, and vehicle engineering. A total of 149 submissions were received for presentation at the conference, of which 57 were ultimately accepted after a rigorous three-part single blind review process. A wide variety of topics is covered in the papers, which are divided into 3 categories: machinery, new materials, and vehicle engineering. The book provides a valuable overview of the latest developments and breakthroughs, and will be of interest to all researchers and professionals working in the fields of new materials, machinery, and vehicle engineering.