Abstract:On the basis of drawing on the evaluation index system of national enterprise informatization, this paper systematically analyzes the characteristics of the assembly building EPC enterprises and the characteristics of information needs. Using contrast method to summarize the domestic and foreign literature, it constructed the informatization performance evaluation index system with informatization "input-output" mechanism, which the second-level indicators including strategic planning, infrastructure construction, talent construction, external environment investment, financial indicators, business process performance output, management performance output, and the implementation of the EPC enterprise information performance evaluation index system, market performance output, other stakeholders and learning and growth. Finally, the analytic hierarchy process (AHP) is used to calculate the weight of the indicators, and the evaluation of the performance of the EPC enterprise is realized by the overall consistency test.