Abstract：Research purposes: The track of high-speed railway requires higher safety，reliability and regularity than that of ordinary railway， so there are much higher requirements of mechanics property ， applicable property and integral property of structure for the all components of track than that of ordinary track in order to satisfy the requirements mentioned above of track structure. The purposes of this paper are to provide research achievements and applied experiences regarding to the track of high-speed railway at home and abroad so as to satisfy the needs of construction and development of high-speed railway in China.
Research Conclusions: The analysis and comments are made on the requirements and the technical indexes of rail sub-rail foundation，fittings and ballast bed for track structure of passenger dedicated railway line and high-speed railway in many countries，and the thinking is offered for development of the key track technologies.
2007, Vol. 24 
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