Welcome to ICoGB 2026 Organized by Tongji University and China Association of Building Energy Efficiency, and co-organized by Xi'an Jiaotong University, Chang'an University, Yangtze University, Zhejiang University of Science and Technology and CoreShare Academic Exchange Center, 2026 4th International Conference on Green Building (ICoGB 2026) will be held during May 8-10, 2026 in Shanghai, China. With researchers, scientists, engineers, and scholars as its contributors, ICoGB presents an open forum aiming to raise green building awareness, spur standards, and develop practical solutions for sustainable buildings by engaging the public, the industry, and the government in the world. We human beings anticipated a promising future with clean water and a clear sky. The illustrated future features better-performing buildings where energy, water, and materials are used sustainably. The ICoGB 2026 conference committee is excited to invite professionals and scholars from all over the world to participate in this significant conference, to enhance our knowledge and create new knowledge to help promote the advances and changes of joint academic research.