Abstract: Regional environmental collaborative governance is an important part of the construction of Chengdu-Chongqing economic circle, which is of great practical significance for improving the urban competitiveness of Chengdu-Chongqing region. Drawing on the existing practical experience of Beijing-Tianjin-Hebei region, Yangtze River Delta and Pearl River Delta in the environmental collaborative governance, we can find that the collaborative governance starts from the four dimensions of legislation, law enforcement, law enforcement, justice and law enforcement, which can give full play to the role of different subjects and significantly improve the effectiveness of the governance. Among them, it is necessary to not only pay attention to the role of local laws and regulations in regional environmental collaborative governance, but also pay attention to the participation of multiple subjects and strengthen legislation, the attempts of law enforcement, justice and law abiding, in order to enhance the specific effectiveness of regional environmental collaborative governance in Chengdu-Chongqing economic circle.