要設計一場具影響力的公眾演說，演講者不能忽略演講情境的存在；要了解演講者如何進行演講設計，就須從其面臨之情境著手。過往以公眾演講為研究主題的文獻與坊間書籍，多聚焦於演講者如何運用演說技巧，或分析知名演講者進行演講時所使用的特定規則及方法，雖可窺探演講者如何進行演說設計，但對於情境的存在鮮少論及，亦無法真正擷取演講者為何如此規畫的原由。再者，演講之中的情境來自於四面八方，發掘演講者如何篩選及妥適運用情境，才是對於想要培養及建立公眾演講技巧者的最佳學習途徑。因此，本研究與六名TEDxTaipei演講者進行深度訪談，從演講者觀點出發，分析演講者感知哪些情境、並如何因應情境設計演講內容。 / To design a powerful public speech, a speaker cannot neglect the existence of speech contexts. To understand how a speaker designs his/her speech, we should first look at the context that the speaker faces. The majority of the literature reviews and books tend to focus on the public speaking skills of the speaker or analyze specific rules or methods adopted by famous speakers. Although this offers a glimpse into how speakers design their speeches, it seldom discusses the existence of speech contexts, nor is it able to pinpoint the reasons why a speaker takes a certain approach. Furthermore, since speech contexts vary in different places, guiding speakers how to select and make use of contexts is the best teaching approach. Therefore, this study conducted in-depth interviews with six speakers from TEDxTaipei in order to analyze what context they are aware of and how they design their speeches based on such context.