In view of development characteristics of the industrial park, the selective standard of leading industries legitimately as well as scientific index system of industry evaluation construction, the leading industries are evaluated from industrial scale, expansion ability, market competition, technology innovation and social benefits etc, by using the principal component analysis method and taking Zhuzhou Tech Industrial Zone as one example. Then, according to the future development of leading industries industrial park, some suggestions of strengthening the industrial association cooperation, increasing technological innovation, accelerating the pace of investment promotion, as well as promoting manufacturing and producer services development are proposed.