The issue that whether multi-subject development and shared progress is appropriate for inter-regional environment governance and how these can be achieved has received great attention. First, based on the analysis of the characteristics of inter-regional environment governance, this paper explains why it is necessary to pursue multisubject development and shared progress in inter-regional environment governance. Second, based on a process theory of public policy, the paper develops a framework of the mechanism of multi-subject development and shared progress in inter-regional environment gove...