Abstract：Research purposes: With no referential experience，the railway " Twelfth Five － Year" development plan is the first project in China that commences environmental impact assessment． In connection with characteristic of the railway " Twelfth Five － Year" development plan，the paper puts forward exploratory environmental impact assessment methods，evaluation contents and relevant suggestions in accordance with related laws and regulations，compulsory standards，regulations and norms．
Research conclusions: From the view of environmental protection，the paper presents principle requirements for the proposed developing goal and layout of the railways " Twelfth Five － Year" development plan． It provides reference for plan’s compilation，optimization and approval decision making． Also，it provides vital safeguards for railway’s scientific development，safe development，sustainable development in the level of planning． Simultaneously，the paper proposes some suggestions in direction for follow － up implementation．
郑宏波. 铁路“十二五”发展规划环评探究[J]. 铁道工程学报, 2012, 29(1): 100-103.
ZHENG Hong － bo. Study on EIA of Railway "Twelfth Five － Year" Development Plan. 铁道工程学报, 2012, 29(1): 100-103.
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2012, Vol. 29 
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