The study of textbook research has always been a hot issue of common concern in all countries of the world. The value of textbook research lies not only in the quality of textbooks, but also more important in improving the critical ability of textbook users. At present, the widely used textbook research methods mainly include quantitative content analysis, qualitative content analysis, and description and interpretation analysis, but these lack the rationality basis of methodology and theory. Therefore, the methodology of textbook analysis has become a vacant area in curriculum research around the world. As a special analysis method of ideology, Critical Discourse Analysis (CDA) can reveal the implicit ideology in textbooks and provide a reasonable methodological basis for textbook analysis. Also it opens a new perspective for textbook analysis. This thesis selects the CDA model of the social studies textbooks of the Chinese Taiwan scholar Wang Yaxuan. This model combines the qualitative content analysis and critical discourse analysis with detailed steps and methodological explanations. Currently, the model has been fully recognized in mainland China and Taiwan. Both China and South Korea are deeply influenced by Confucian culture in the process of historical development. The education of the two countries also has a similar development background and development process. Therefore, it is helpful to use this model to analyze the ideology and cultural context hidden in Korean social studies textbooks. In order to provide a useful analytical model, this thesis analyzed and explained the CDA model of Wang Yaxuan's social studies textbooks in Taiwan.