A study on the social culturology of "the Japanese boom" This study considered a Japanese boom caused after the war in Japan from a sociocultural point of view. Specifically, I analyzed the economic background of the Japanese boom, a political social background, a background around the Japanese with the historic consideration of the Japanese boom and was intended that I considered backgrounds and the meaning that were inherent in a Japanese boom. As a result of study, three times of Japanese booms understood that a verbal background existed similar economy, politics, society after the war. Specifically, it is as follows. ①The Japanese boom is economical recession and a social phenomenon to break a relation, recession closely. Agreement of the economical situation of the reader who is intentional commercialism and consumers of the publication world that is a producer is seen there. ②The Japanese boom has the relationship that maintenance, turning to the right is close to the political situation of In those days such as becoming it and acts as one side of the language nationalism, and it may be said that it is a result given the value of the language ideology in Japanese as "national language". ③The Japanese boom occurs with a change of Era of the Japanese including the new Japanese spread and Japanese disorder at the verbal side, and it may be said that it functions to show directionality to make much of a language model. In other words, the Japanese boom is not the fashion of simple Japanese in itself, and it may be said that Japanese as national language is the product of the general society change functioning as political tool and symbol, means to break recession or faith-like boasting about feeling under the premise called the language (=national language) of Japan.