Concrete is generally used in the construction of hydraulic building structures,which have the advantages of high compressive strength and good durability.However,the hydraulic building structure is often affected by the action of water,and special technical requirements are put forward for construction to ensure that concrete structures adapt to special environments.In this regard,this paper analyzes the construction characteristics of concrete structure in hydraulic buildings,explores the technical points and discusses the special precautions around three construction links of concrete preparation,pouring and maintenance,aiming to improve the overall performance of concrete structures,make them bear high pressure and resist water erosion,so as to meet the long-term and safe application need of hydraulic buildings.