主导产业作为一个国家或地区经济发展的驱动轮对该国家和地区经济的产业结构的演变具有导向作用。本文选取最近编制的福建省2007年、2012年两张投入产出表所提供的系统的丰富的统计数据，利用投入产出技术计算各种相关的系数，构建选择主导产业的评价指标体系，并利用变异系数法计算各个评价指标的权重，进而计算出各产业部门的综合得分以及排名，从而选出福建省的主导产业。

Leading industry as a driving wheel of economic development in the country or region of the evolution of national and regional economies in the industrial structure has a guiding role. This paper selects the two recent establishment in Fujian in 2007-2012, put some statistical data output tables provided by the system, use input-output coefficients of all relevant technical computing, build the evaluation system to select the leading industry, calculate the coefficient of variation for each evaluation method using weights, and calculate the total scores for each industry sector and ranking, so as to elect the leading industry in Fujian Province.