With the continuous development of bridge construction technology in China,the intelligent bridge construction system represented by BIM,IoT,artificial intelligence,big data and other new genera-tion of information technology is constantly exploring and improving.These technologies have promoted the innovation and transformation of bridge construction mode in China.Based on the analysis of the devel-opment background of intelligent construction at domestic and international,combined with the practice of the Dadu River bridge project of The Sichuan-Tibet Railway.The system framework,main contents and expected results of the intelligent construction system of long-span suspension bridge under complex geo-logical conditions in plateau mountainous areas are further elaborated.Furthermore,the paper puts for-ward the development direction of intelligent bridge construction technology.The research contents and a-chievements can provide reference for the popularization and application of intelligent bridge construction technology in the bridge field in China.