Abstract: This article analyzed the improvement of key eutrophication indicators in major inflow rivers and lake sections within the northern runoff area of Fuxian Lake during the 13th Five-Year Plan period. It identified that factors such as total phosphorus, total nitrogen, and dissolved oxygen have not shown effective improvement, potentially due to pressures arising from water scarcity and climate change. Preliminary measures and recommendation were proposed for achieving systematic watershed management and green high-quality development.