With vast territory,the Yangtze River Economic Belt has high degree of industrialization and urbanization along the river basin,and the ecological environmental pollution across the regions is seriously spread now.The administrative areas are fragmentized and the cross-regional governance is more difficult,and the current ecological governance system presents a relatively“fragmented”characteristic.Based on the perspective of multi-level governance and China’s unique core political system,the research starts from the aspects of high-level coo...