Abstract: Studying the contribution of enterprise informatization(EI) to enterprise output or to GDP and evaluating the investment benefit of EI have important theoretical meaning and practical value.By building a contribution model of EI to GDP, this article analyses the contribution of EI to GDP from the perspectives of enterprises and gets the contribution degree by an empirical analysis by using the contribution survey of EI to GDP in 2007, Fujian province.The result of the empirical studies indicates that the model is effective.

Key words: enterprise informatization, GDP, contribution degree model