Subway line S 1 passes through Yuhuatai District and Jiangning District, starts from Nanjing South Station, a new city in the south, passes through the west side of Dongshan District in Jiangning, Jiangning Economic and Technological Development Zone, Moling District and Lukou New City in the south, and reaches Jiangning Station, a new airport city in the south. The total length of the subway line S 1 is 37.3km, of which the underground section 19.7km and the transition section is 0.7km.