As to the relationship between the fictional space and characters, most of the previous researches focus on the symbols and themes of the literary works. In contrast, this paper argues that the description of characters' bodies and appearances affects the understanding of the fictional space. By introducing the concept of ”the focal body” to help analyze Taiwan urban fiction, it shows that the weakened body of characters, a remarkable feature in the genre, influences authors' perceptions of urban space and demonstrates their attitudes. This paper investigates Huang Fan, Lin Yaode, Zhu Tianwen and Zhu Tianxin's urban fiction, and discusses the compositions of weakened bodies with different approaches.