After World War I the administration of commerce and industry in Japan was supporting Shotai-no-Kai (The Association of Household), which was a women's association promoting the projects of adult education for improvement of life in cities. But it is not clear why the administration noticed improvement of life. Nor is it not clear how the activities of this association was recognized at that time.

In this paper I clarify two points. First, the purpose of Shotai-no-Kai supported by the administration of commerce and industry was not only changing life consciousness of the new middle class, but also making this class a basis of changing the system of daily necessities retail (expanding the use of public markets, organizing consumers' cooperative societies). Second, some activities of Shotai-no-Kai were commented that they gave a model of daily life which only the upper part of the new middle class could follow. This criticism was also true of other associations for improvement of life in the Taisho Era.