The Objective Norm in American, by Michael Schudson, explores how and why objective norms developed in American journalism. Purpose is one of the most important professional values ​​of American journalism, it can be identified by the following measures: expressed loyalty, ethnographers' observations and work routines, resistance with provocative behavior, impersonality and impartiality in news content. Contrary to the view of some scholars that economic and technological change strengthens the ethic of purpose, Schudson believes that four conditions encourage the articulation of norms. Two of them are Durkheimian, the other two are Weberian. One of the Durkheimian conditions believes that the emergence of the norm serves to achieve horizontal solidarity, another Durkheimian condition believes that the norm is used to identify the group from other groups. Both Durkheimian conditions end in social cohesion. Weberian conditions find norm do not appear suddenly, but are transferred from the older generation, who benefited from these rules, to the young generation. It is the tool used by superiors to control subordinates in a complex organization. The Weberian condition is to satisfy the need for social control. Discussing the history of the development of American journalism, this essay outlines the emergence of these four conditions in the late 19th and early 20th centuries. In this way the author discovered the reason why a new moral norm appeared in American journalism. With respect to European journalism, this article discusses why objectivity as a norm appears for the first time and more comprehensively in America instead of Europe. The author provides a rough chronology of the objective norm emerging in American journalism and explains the internal origin of these co... ... middle of paper...p.150). This is why the objective fact existing before the 1920s does not constitute the objective norm and the theory of economic motivation is not justified. However, in the attitude towards economic motivation, the author's opinion is too extreme. He thought this theory was widely believed but not justified anywhere (p.160). Excessive criticism of economic motivation leads the author to focus only on the internal motivation of the objective norm from the point of view of group development and ignores the importance of external elements such as economic condition. This limitation makes this article unbalanced. The author leads us to review the historical development of American journalism and analyze the social motivation for the emergence of objective norms. Some opinions of other scholars were presented and criticized. In conclusion, this article is a significant guide to research on American journalism.