This paper deals with education-related policy documents, courses of studies and civics textbooks of senior high schools to clarify the concept of ‘Taiwan citizen’. There are following three findings as a result of the analysis. First, academic ability and the ‘Taiwan citizen’ have been strongly linked at the policy level, and, accordingly, the realization of the ‘citizen’ means to improve academic ability. Second, what was clarified through the analysis of the textbooks was that ‘Taiwan citizen’, ‘we’, and ‘our country’ was strongly tied. In other words, ‘Taiwan citizen’ is a concept close to ‘nation’, and, in this sense, it cannot be said that the concept of ‘Taiwan citizen’ has changed significantly. Thirdly, there are various sub-items under the concept of the ‘Taiwan citizen’, and, among them, ‘multiculturalism’ and ‘multicultural society’ has been newly added and emphasized as the items of ‘Taiwan citizen’ in recent years. One of the findings from the textbook analysis is that while multicultural education in Taiwan was traditionally for indigenous people, it is more conscious of coexistence with new residents coming from Southeast Asian countries, which suggests the flexibility of Taiwan's concept of ‘citizen’.