Japanese mass media has been severely divided concerning the new security legislation in the year 2015，with the newspapers of Yomiuri News，Nippon Keizai News and Sankei News supporting the government in forcing the security bill，and newspapers of Asahi News，Mainichi News，Tokyo News and most local newspapers opposing it. The article，based on the analysis of frequency and content of media reporting，examines the connection of news reporting with the new security legislation and analyzes the various discourse structures of Japanese mass media relating to issues of the nation，constitution，dictatorship and democracy.