With the world facing increasingly serious global climate change and resource scarcity issues, ecology and the environment have received much attention in recent years. As a major factor in human activity, design plays an important part in protecting the environment, as does the role of digital technology in finding solutions to the pressing problems faced in this regard. This book presents the proceedings of ISWED2023, the International Symposium on World Ecological Design, held on 17 December 2023 in Guangzhou, China. Sponsored by the World Eco-Design Conference (a UN Consultative NGO), the conference provides a platform for professionals and researchers from industry and academia to present and discuss recent advances in the field of ecological design. This year, the conference focused on the four topics of digital technology and health, digital technology and transportation, digital technology and energy, and digital technology and the environment. A total of 518 submissions on these topics were received for the conference, of which 125 were accepted for presentation and publication here. Providing a current overview of research and innovation in ecological design around the world, the book will be of interest to all those working in the fields of ecological design and digital-technology integration.