抄録
This essay describes the process by which Japan's advertising design in the reconstruction period was changed by adding a roll of propagating the corporate image, focusing on the changes in the sense of the advertising interest by acceptance of PR theory and conceptualization of advertising expressions. This theory was introduced under the guidance of GHQ into Japan after World War ll. It was generally understood as a strategy necessary for enterprises (government) to appeal to the public as welfare enterprises (organizations). At the begiuning of its introduction, brought innovation to the public relations of the government and was applied to advertising design such as posters. In the 1950s, its influence spread into the private enterprises.