Abstract:To strengthen the management and protection of rivers and lakes, in Dongying Municipality, it has established a river and lake management mechanism featuring the linkage of River-Lake Chief, Ecological Police Chief, Prosecutor General and Court President, named as "Four Chiefs Linkage". It is not only an institutional innovation at the grassroots level for implementing the river-lake chief system, but also a systematic optimization and consolidation of the system. By integrating the functional advantages, human resources and institutional tools of water resources agencies as well as public security, procuratorial and judicial organs, the mechanism strengthens the basic system, supervision system and governance system for the implementation of the river-lake chief system, achieving a management effect of "1+1+1+1 > 4".