It has been fifty years since the first television station, TTV, was established in Taiwan. Studies of TV commercials help us not only to understand the relationships among advertisements, popular culture and social changes in Taiwan, but also to create an academic dialogue around the axis of advertising history. The present study begins with reviewing the development of Taiwan's TV commercials and advertising history literature, and then it adopts principles of semiotics to recognize the textual features and the analytical units of TV commercials. We suggest that the analytical toolbox proposed by Tomashevsky should be suitable for the research of episodic structures and persuasive functions of TV commercials. Based on the results of our analysis, we may further discuss the process in which the narrating strategies of TV commercials reflect three significant dimensions in Taiwan's post-war culture, and finally provide suggestions for future semiotic studies of TV commercials.