With the continuous development of modern science and technology,the construction technology of water conservancy project is becoming more and more mature.Only by adopting scientific,reasonable,safe and reliable construction technology in the construction process can the overall quality of water conservancy projects be guaranteed and the expected benefits be achieved.Taking the flood interception canal project in the Rongxi area as an example,the technical essentials and quality requirements including channel excavation protection,box culvert dredging,box culvert transformation in the construction links of the project were analyzed,aiming to further improve the engineering quality while meeting the design requirements,and provide reference basis for engineering construction.