Abstract:The construction of smart water conservancy system has been written into the 14th fifive-year plan for national economic and social development of the People’s Republic of China and the outline of long-term objectives in 2035. At the same time, Leading Party Group of Ministry of Water Resources has made it clear that the construction of smart water conservancy is not only a signifificant symbol of high-quality development of water conservancy, but also one of the six implementation paths, which can promote high-quality development of water conservancy in the new stage. The key elements of building a smart water conservancy system, i.e what are what is the current situation, type and goal of intelligent water conservancy application, how to sort out smart water conservancy application within a specifific scope and evaluate the formed application system, which are the primary problems need to be solved. Through the research on smart water conservancy application, this paper attempts to reveal the composition and objectives of intelligent water conservancy application system, build smart water conservancy application system which meets their own characteristics needs for water conservancy administrative departments and water conservancy management units and provide working ideas and basic methods.