Abstract: urban landscape water is an important part of ecosystem, which provides sustainable development conditions for cities. The research object of this study is the landscape lake outside the science popularization education base of Guiyang Aha Lake National Wetland Park.Through pollution control, habitat creation and restoration technology of water ecosystem, the water has the ability to purify water quality and maintain the balance of the water ecosystem. The results showed that water transparency, total phosphorus(TP),chemical oxygen demand(COD_cr), ammonia nitrogen(NH₃-N) and other indicators were significantly improved after the completion of ecological restoration measures. The results of this study have certain guiding significance for the water quality improvement,ecological construction and later management of urban landscape water.