Using the Yangtze River Delta Eco-Green Integrated Demonstration Zone as a case study, this paper analyzes the practical challenges of transregional ecological and environmental governance. Guided by the governance philosophy of collaborative construction, joint governance, and shared benefits, alongside an ecology-first development orientation, it explores the practical pathways and implementation eff ects of transregional ecological and environmental governance in the Demonstration Zone. This exploration is conducted from the perspectives of institutional synergy in territorial spatial planning, the establishment of joint governance mechanisms, and transboundary water management. Furthermore, considering the social impacts and science popularization value generated by these governance practices, this paper discusses pathways for integrating typical experiences of transregional ecological and environmental governance into environmental education.