This paper defines the connotation of Digital China. Based on the concept of"Five-in-one"put forward by the Party Central Committee, this paper summarizes the construction logic of Digital China Index System from the three levels of macro objectives, strategy quantification and measurement, and puts forward five core indicators, nine main indicators and four sub item index systems of Digital China. At the same time, various types of efficacy functions, weighted factor analysis and cluster analysis are used to carry out dimensionless processing, weighted calculation and data statistical analysis of the basic data of Digital China index system. Finally, we propose some policy suggestions for the construction of Digital China in the future.