This paper is based on the perspective of literary geography, examines the rationality and irrationality of the Chinese geographical background in Sasi-Namjung-gi, and divides the spaces shown in the work into voluntary movement spaces and voluntary orientation, and involuntary movement spaces. The results analyzed in this paper are summarized as follows. Seongdo is a voluntary moving space that Ms Sa chose after being forced eviction by Yoo Yeonsoo for the first time. The fact that Ms Sa does not go to her parents home, but heads to Seongdo, where her parents-in-law's graves are located, shows that she still has a strong sense of being a member of the Yoo family. In Sasi-Namjung-gi, the word Seongdo in the phrase "Below the Cemetery in Seongdo" means inside the capital city of Beijing. Changsha is a voluntary-oriented space that Ms Sa chose after Ms Kyo, Dongcheong, and Laengjin did not allow her to stay below the cemetery of her parents-in-law and expelled her again involuntarily. Ms Sa wants to go to Changsha because there lives Yoo's aunt Ms Du. In other words, the first voluntary-oriented space is the cemetery of her parents-in-law and the second place is where Yoo's close family lives. In addition, Changsha is a space that served as a cradle of Confucian culture and also where Zhu Xi created his teachings. Thus the place suits well the characteristics of Confucian-oriented Ms Sa. However, due to the storm, Ms Sa cannot reach her destination Changsha; instead, she reaches Dongting Lake. Thereupon, Ms Sa attempts suicide because Dongting Lake is an involuntary moving space, not her voluntary oriented space. Dongting Lake is the most critical geographical space of Sasi-Namjung-gi, and it plays a vital role in conveying the subject and the writer's consciousness of the work.