Abstract: In order to promote the high-quality development of Chengdu-Chongqing double city economic circle and further deepen the innovative application of intelligent high-speed railway, based on the strategic development plan of China's intelligent high-speed railway and the system architecture of the current period, and in combination with the main characteristics and whole life cycle application requirements of the Second Chengdu-Chongqing high-speed railway, this paper proposed an intelligent scheme of Second Chengdu-Chongqing high-speed railway which took the intelligent railway Artificial Intelligence (AI) platform as the core, and included the intelligent application of intelligent construction, intelligent equipment and intelligent operation. The paper also explained the main functions of intelligent high-speed railway AI platform, the main engineering contents of intelligent application and the composition of communication network.