Geotechnical masses of the earth serve as the bearing medium for major engineering projects, the storage host for mineral resources, and the disposal site for human waste. Geological environments and major engineering works are interrelated and mutually restricted. In particular, global climate change has rendered their interactions far more complex, giving rise to a number of emerging interdisciplinary subjects and research directions dedicated to safeguarding the safety of major projects and protecting eco-geological environments. This symposium aims to establish a communication platform for scientists, engineers and relevant professionals in these fields, promote interdisciplinary integration among environmental science, geology and geotechnical engineering, and advance the sustainable development of geotechnical engineering and geological environments.