公共廁所是現代城市不可或缺的基本設施，而日常排泄更是維繫個人身心健康的必要過程。然而，因為排泄過程所涉及的私密性和排泄物所引發的厭惡感，使得許多糾結複雜的身體空間議題被封存在都市角落的公廁密櫃裡。本文試圖藉由公廁空間情境的心理分析和如廁身心處境的空間分析，搭起環境心理學與心理地理學之間的對話平臺。在理論層次，本文結合了Young活歷身體的情境體現概念、吳鄭重有關身體空間的日常生活地理學觀點、Kristeva奠基在賤斥情境上的危機主體理論、Longhurst對於滲漏身體與密櫃空間的流動邊界探索、Pile試圖結合心理分析和地理研究的理論撮合，以及Fusco對於主體空間的空間民族誌研究取徑等，建構出公廁情境與賤斥體現的微地理學。在經驗層次，我們採取空間觀察、焦點團體和個別訪談等方法，針對機關學校、公共運輸、百貨商場、公園景點等四種常見的都市公廁類型，進行初步的個案研究，匯聚出公廁空間情境的空間文本、如廁身心處境的身體文本，以及公廁清潔者既非主體、亦非客體的失佚文本。透過理論和經驗的參差對照，本文逐步梳理出公廁密櫃裡身體與空間的理論縫隙和行動皺褶，為日常生活地理學的理論與實踐提供一條具體而微的康莊大道。

This paper attempts to establish a link between geography and psychoanalysis by exploring the terrae incognitae which is embedded in the "secret chambers" of the public toilets and embodied in the "black box/dark continent" of our bodies and minds. The expedition project includes a psychoanalysis on the close(t) spaces of the public toilets and a topoanalysis on the abjection dynamics relating to the excretion processes.On the theoretical ground, we drew on a wide range of theories, including Young's ideas of lived space and situated embodiment, Wu's body-space conceptions in the geography of everyday life, Kristeva's theories of abjection and chora, Longhurst's hypotheses of close(t) space and fluid subjectivity, Pile's attempts to marriage psychoanalysis and geography, and Fusco's applications of ethnographical approach to the study of changing rooms. On the empirical ground, we conducted a spatial ethnography on the toileting public in the public toilets by observing assortment of public toilets in Taipei and by interviewing the designers, administrators, janitors, and users of the public toilets.In so doing, this article highlighted both the space-texts and the body-texts of the negotiation of subjectivity through the very process of abjection in the public toilets. In addition, during the process of research, we also identified the "missing texts" of the janitors who were considered to be neither subjects nor objects of the abjection.