According to point axis theory, by using multiple statistics and analysis methods, this article analyzes graded space layout for urban nodes of “Jiangnan Trillion Industrial Corridor”, and obtains the graded system of these urban group nodes such as the first order node （developed cities） including Wanzhou and Fuling, the second order node （middlesized cities） including Banan District and Changshou District, the third order node （developing cities） including Zhongxian County, Fengdu County, Fengjie County, Yunyang County, Shizhu County and Wushan County. Chongqing should, based on this, scientifically plan urban space layout, construct network-based infrastructure system, accelerate clustering industrial development, speed up agglomeration of resources and factors, consolidate coordination and cooperation between regions and realize effective pointaxis system development.