“美国梦”源于欧洲清教徒的宗教理想信念,一直都是举世瞩目的理想精神之一。但当美国发展到工业化社会阶段,“美国梦”的实现却显现处了一些不和谐的音符。本文通过对《嘉莉妹妹》中女主人公主要思想和行为情节描写的分析,指出嘉莉的道德倾向主要是受当时的社会环境影响而形成的,最终揭示出该作品的批判社会现实意义。 “American Dream ” originated from the conviction and conviction of European Puritans and has always been one of the ideal spheres of world attention. However, when the United States developed into an industrialized society, the realization of the “American Dream” showed some discordant notes. Through the analysis of the heroine’s main thoughts and behavior plots in Sister Carrie, this article points out that Carrie’s moral tendency is mainly influenced by the current social environment and finally reveals the critical social reality of the work.