Engineering science and technology are important driving forces in the development of society, and engineering fronts are important guidelines for the future development of engineering science and technology. Since 2017, the Chinese Academy of Engineering (CAE) has been organizing the research “Global Engineering Fronts”, which aims to bring together talents in engineering science and technology and put forward the global engineering research and development fronts by reviewing global papers, patents and other data each year. The results are also expected to provide a reference for people to respond to global challenges and achieve sustainable development. This book is the result of the 2023 research and it consists of two parts—methodology and reports in different fields, describing and analyzing the engineering research and development fronts in the fields of Mechanical and Vehicle Engineering, Information and Electronic Engineering, Chemical/Metallurgy and Materials Engineering, Energy and Mining Engineering, Civil/Hydraulic and Architecture Engineering, Environmental and Light Textile Engineering, Agriculture, Medicine and Health, and Engineering Management, and explaining the key fronts in detail.