In recent years, adhering firmly to the guiding principle that "the River and Lake Chief System must be consistently implemented", it practices the development concept vigorously that "clear waters and green mountains are as valuable as assets", which promotes the in-depth and effective implementation of the River and Lake Chief System in Jining Municipality. Focusing on Nansi Lake as "one key area" and the Beijing-Hangzhou Grand Canal and the Yellow River as "two mainstream", the Jining government gives overall consideration to small and medium-sized rivers, takes classified treatment of river and lake problems as the orientation, and continuously improves the effectiveness of river and lake management and protection. The practices and experience of Jining in promoting the River and Lake Chief System are summarized for reference.