Input-output relationship analysis of railway transportation industry is taken in this paper based on the national input-output table, railway transportation industry input-output survey results and other relevant statistics data. 以2002年全国投入产出表、铁道部投入产出调查资料和其他相关统计资料为基础,根据投入产出分析的原理与方法,对铁路运输业与国民经济其他部门的投入产出关系进行实证分析。