Abstract: Fengdu County, Chongqing City solves the problem of spatial imbalance of water resources in southwest mountainous areas through innovative implementation of water system connection projects such as "Long Vine and Melon" and "Rice Fragrance Network" and explores the construction of regional water network projects, achieves optimal allocation of water resources, and consolidates Poverty alleviation achievements and rural revitalization. Its exploration and practice in building regional water networks can provide reference for the construction of similar county water network projects in southwest mountainous areas.