This book provides new research results of researchers and practitioners from the 6th International Conference on Advanced Intelligent Technologies (ICAIT2025) organized by IRNet International Academic Communication Center, Wuhan, China, and Interscience Institute of Management and Technologies, Bhubaneswar, India, which focuses on Intelligent Technologies toward Sustainable Society and was held on December 12–14, 2025, at Sanya, China, as an actual/online conference. Advanced Intelligent Technologies (AIT) conference series aims to provide an interdisciplinary research platform exchanging ideas based on presented works and focuses on theory, design, development, testing, and evaluation of all intelligent technologies applicable/applied to various fields of sustainable society. ICAIT2025 focuses on intelligent theory and application for sustainable society, especially. This book consists of two parts, “Advanced Intelligent Technologies” and “Sustainable Society” and covers 39 works from active researchers, practitioners, and graduate students who are working on various theory and application of intelligent technologies and sustainable society.