In this paper, we defined the “field of education” as the political field which consists of educational problems and participants. Then we clarified its structure and relations by using the network analysis. We comprehended the peripheral problems which have been overlooked in the analysis of the process of the higher educational policy and extracted core issues and core actors, then tried to clarify the characteristics of the structure of the field of education in modern Japan. As a result, (1) We could extract the core issues and actors in the field of education and higher education. And our findings are (2) there is a large difference in its network density and structure, and (3) the field of higher education consists of some actors such as governmental, quasi-governmental actors and mediators with business field and so on.