Abstract: With the implementation of new national digital infrastructure projects and the acceleration of information infrastructure construction, the new generation of information and communication technology represented by 5G and data center brings nonnegligible challenges to power grid planning and operation due to its huge energy consumption demand. Detailed analysis of energy consumption of information infrastructure is the basis of scientific response to power growth and power demand, and is the basis of power grid planning and flexible operation. Therefore, starting with the concept, composition and classification of information infrastructure, this paper analyzes the energy consumption status of typical information infrastructure such as 5G base station and data center in detail, considers the influence of technological progress on energy consumption, analyzes and gives the energy consumption trend in the next 5 to 10 years, and gives the energy consumption prediction of typical information infrastructure on this basis. The analysis and prediction results can be used as a reference for considering the load influence of information infrastructure in power grid.