The General Office of Jiangsu Provincial Government issued the Notice on the Three-year Rolling Advance Plan for the Preliminary Work of Key Transportation Projects in Jiangsu Province from 2022 to 2024. The operating length of the main line of Su Tong Yongjia Railway is 3 10km, of which the newly-built line is 30 1km, and the planned construction period is 5 years.

Nantong West, Zhangjiagang, Changshu West, Suzhou North, Hu Fen, Jiaxing North, Jiaxing South, Haiyan West, Cixi and Qiao Zhuang have a total of 10 stations, with a total investment of 107 billion yuan.