Abstract：Research purposes: At the moment，electric lighting is widely used in domestic metro，even though using efficient and energy saving lamps，energy consumption is still serious． Electric lighting increases air － condition load，discharges carbon dioxide，and it does not fundamentally solve the problem of energy saving and environmental protection． So，it is necessary to do the research on using natural daylight for lighting．
Research conclusions: The research shows that tubular skylight system is better than electric lighting in energy saving，environmental protection and safety，it can bring considerable social and economic benefits． Tubular skylight system can effectively reduce the consumption of power for lighting in daytime，make full use of solar energy，which meet a net －zero carbon emissions goal． So，it is feasible to use tubular skylight system in metro engineering，and it is available to popularize and apply．
王志强. 地铁工程采用光导照明系统的可行性研究[J]. 铁道工程学报, 2011, 28(9): 101-104.
WANG Zhi － Qiang. Research on Feasibility of Using Tubular Skylight System in Metro Engineering. 铁道工程学报, 2011, 28(9): 101-104.
2011, Vol. 28 
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