This article investigates identity construction in Taiwan by examining Taiwan Broadcasting System and Taiwan Indigenous Television. Media involves in identity construction and reveals in cultural, ethnic, political and national identity perspectives.The development of Taiwan's public television not only reflects the changes in Taiwanese ethnic groups, culture, society, and politics but also highlights the diverse cultural expressions within Taiwan through the establishment of channels catering to different language groups. The establishment of the English-language channel, Taiwan Plus, not only provides an opportunity for foreigners in Taiwan to learn about the country through an English medium but also signifies an attempt and goal to showcase Taiwan's perspective globally. This channel serves the dual function of promoting Taiwan's values and advocating for Taiwan, contributing significantly to the branding of Taiwan and identity construction. Through an analysis of Taiwan's public broadcasting group and media, this article demonstrates the multifaceted aspects of ethnic, cultural, and national identity construction.