The 2026 International Conference on Structural Engineering, Concrete Materials and Seismic Design (ISECMS 2026) will be held in Nanchang, China. The conference focuses on core areas of structural engineering, concrete materials, and seismic design, and also explores cutting-edge topics such as the innovative application of intelligent technologies in the field of civil engineering. This conference builds a platform for in-depth communication among academia, industry, and research institutions, breaking down communication barriers between the academic and industrial sectors, and facilitating participants to exchange cutting-edge research results, innovative theories, and engineering practice cases. We sincerely invite experts and scholars from the fields of civil engineering, building materials, and disaster prevention and mitigation, as well as industry practitioners from around the world to attend. Together, we will contribute to the high-quality development of the discipline of civil structure and materials, and jointly explore feasible solutions to overcome global infrastructure safety challenges and build safe, durable, green, and low-carbon living environments.