以北京地铁5号线荣获全国优秀工程勘察设计金奖为契机，分析北京地铁5号线的整体定位、工程的重点和难点、工程技术创新点及取得的技术经济和社会效益，阐述我国城市轨道交通技术创新的思路和方法，以及当前形势下对创新重点的思考。

Beijing metro Line 5 has been awarded the gold medal of National Excellent Engineering Survey and Design Project． In this context，the paper analyses the overall functional orientation，engineering emphasis and difficulties and engineering technological innovations as well as technical，economic and social benefits acquired for Beijing metro Line 5，and elaborates the ideas and implementation of technological innovations for urban rail transit in China，along with the innovation focus under current condition

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