Based on hypothesis of the rational economic man, enterprisers will not throw themselves into this sector without economic benefit (Vito and Silvana, 2004).This study selected three indicators to evaluate economic benefit of each sector: demand increasing flexibility, industrial relevancy and labor production rate. The indicator “demand increasing flexibility” reflects the growth potential while individual income increasing (Yang et al., 2004). The Indicator “industrial relevance” refers to the degree of relations between this sector with others, and this study made use of the gray incidence degree (Liu, 1996) to evaluate industrial relevancy. The indicator “labor productivity” refers to the proportion of the industrial added value to the wage of industrial employees.