This paper looks into different explanations of 'realism' through a controversial debate over 'feces realism', which was raised after the Taiwanese Culture Award held in 1943, the most intensive period of Japanese rule in Taiwan. In this debate, Chang Wen-Huan's natural realism and Yang Kui's 'feces realism' mainly fought against the following two arguments: Nishikawa Mitsuru's 'Psychological Realism', which tended to regard Taiwanese literature as part of Japanese tradition, and Hamada Hayao's 'Conceptual Realism', which actually supported the Japanese national policy. In other words, the 'realistic fictions' of Taiwanese authors were difficult to support colonial assimilation policy. Thus, this paper analyzes how the ideological conflicts that the debate involved and how different the crossroads of 'reality' they are.