Abstract:Taking the foundation pit drainage of construction site in the south of Hexi in Jianye District, Nanjing as a study object, the present situation of foundation pit drainage and its influence on the water environment are analyzed. From the perspectives of formulating the group discharge standards, introducing the water governance agency, strengthening the drainage treatment monitoring and supervision, and building the intelligent construction sites, the pollution prevention and control countermeasures of foundation pit drainage are formulated, and the scientific and reasonable foundation pit drainage management model is explored, which provide the reference for the foundation pit drainage management in other similar areas.