Abstract: This thesis tries to analysis the development of journalism objectivity through the alternation of the social thoughts of American society and some philosophical aspects of the problem.

• 内容提要：本文通过对美国社会思潮和哲学上理性主义和非理性主义，可知论与不可知论的发展历程的简单梳理，试图对美国新闻客观性理念的发展脉络形成一个统一的认知。