Flooding of mountain river rise and drop suddenly，the river often drying up during the dry season．Population concentration areas not only require the river meets the demand of flood discharge，but also require the functions of landscape，leisure and entertainment，and so on．The goal of mountain river management is changed from flood control standard in the past to the construction of "safe flood channel， rich and stable watershed ecology，natural and harmonious ecological landscape，characteristic ecological furrow economy". Take the project of Huangcun section of Yanxi River Basin for example，through measures of the construction of dam， river dredging， weirs and ecological pond，etc． Make the inland river not only meets river flood requirements，but also to achieve a “fluent，water clear， green shore，scenery beautiful，fish cheerful，people pleasure”comprehensive improvement goals，improve environmental quality of the town's residents living．