Strategic alignment of Business Planning (BP) and Information Systems Planning ( ISP) becomes the key factor integrating business resource during strategic information systems era. This empirical study measured the rela2 tionships among the strategic alignment of BP2ISP , strategic orientation of enterprise , the inner and outer environ2 ment of enterprise , strategic status of ISP and IT contribution to business performance through strategic alignment model and business active model . Moreover , analyses of data gathered in a mail survey of Chinese enterprises indi2 cated that the intention of higher managers’strategic planning and the capability that they integrate the business re2 source by IT are the important factors which company obtain the competitive advantage.