美国总统政治具有社会化表演的特征，随着网络媒介的兴起和“后真相”政治的 蔓延，这种特征在当代显得格外突出。本文通过对美国总统政治网络媒介叙述文本 的符号叙述学分析，综合媒介情境论、话语理论，明确了相关叙述文本的纪实叙述类 型，并对其叙述内容中的“台词设计”进行辨析。同时，本文从否定性、肯定性两个 向度出发，对美国总统政治的媒介话语策略及其隐含的权力关系进行分析，并强调作 为解释社群的民众对叙述事件的意义解读决定着媒介叙述文本的类型、内容和叙述技 巧。由此提出，对“后真相”时代美国总统政治的研究应当以关注其民众的接受状况 为基本出发点。

American presidential politics features socialized performance, which is particularly obvious within the post-truth politics with the rise of network. Through the analysis of American presidential politics by semio-narratology, combined with Media Situation Theory and Discourse Theory, this paper defnes its narrative type as a factual narrative, then points out its narrative content as the design of actor’s scripts. At the same time, this paper reveals the media discourse strategies and the intention of the narrators of American Presidential Politics from negative and positive dimensions. Interpretative communities’ meaning interpretation determines the types, contents, and skills of the American presidential politics’ media narrative texts. Therefore, the study of American presidential politics in the “post-truth” era should focus on the acceptance of American people as the basic starting point.