Bridge design and construction are key to high speed railway engineering. During the process of a series of bridge-building experiences such as Beijing-Tianjin intercity railway bridge, Wuhan Tianxingzhou bi-purposed bridge over Yangtze River and Nanjing Dashengguan bridge etc.,we have borrowed sophisticated technologies and successful experiences from all around the world and carried out in-depth study and research on ideas and concepts, technical standard, design characteristics and applications of technologies, thus key technologies for high speed railway bridge with Chinese characteristics gradually took shape.