本論文說明儂希對現代主體形上學的解構，並將之區分為「現代主體的發展與闡述」、「解構的起始-根源條件」、「主體以及共同體的解構」三個主題。在「現代主體的發展與闡述」中，本論文澄清儂希對現代主體的理解：儂希闡述了主體的自我完成，並進一步說明主體觀念在政治上的貫徹執行。儂希根據共同體的自我實現來解釋集權主義，以及它在20世紀造成的歷史與社會災難。在「解構的起始-根源條件」中，本論文澄清儂希對解構思想的探討。儂希探索了存有的離棄狀態，詳述了存有的有限性與延異。儂希以存有的意義來取代存有的真理，並以存有意義來作為解構的根源。實存與世界奠立在存有意義之中，後者將實存向外暴露以及敞開了世界的開放性。在「主體以及共同體的解構」中，本論文澄清儂希的解構策略與運作。儂希將書寫與自我完成對立起來，藉由書寫來干擾主體的自我完成。書寫產生了無作品性，並以無作品性敞開了主體。書寫重複了意義，它讓意義重新開始，並發生成為意義事件。儂希強調共在的重要性，共在分享了存有的虛無，它不是作品，它抵抗著共同體的自我實現。共在聚集著無本質的所有實存，它暴露出每個實存的它者性，並構成了它者的共同體。 / This dissertation discusses Nancy’s deconstruction of modern metaphysics of subject and divides into three themes which are “development and elaboration of modern subject”, “archi-originary condition of deconstruction” and “deconstruction of subject and community”. In “development and elaboration of modern subject”, dissertation clarifies Nancy’s understanding of modern subject: Nancy explicates the self-completion of subject and the political effectuation of the idea of subject. Based on the self-fulfillment of community, Nancy explains totalitarianism that caused historical and social disaster in the 20th century. In “archi-originary condition of deconstruction”, dissertation clarifies Nancy’s discussion of deconstructive thought. Nancy explores the abandonment of Being and illustrates the finitude and différance of Being. Nancy replaces the truth of Being with the sense of Being and designates the sense of Being as the origin of deconstruction. Existence and world grounded in the sense of Being which exposes existence outside and spaces the openness of world. In “deconstruction of subject and community”, dissertation clarifies Nancy’s strategy and operation of deconstruction. Nancy opposes writing to self-completion and interrupts the self-completion of subject through writing. Writing produces the worklessness that spaces the subject. Writing repeats sense, begins sense anew and happens as the event of sense. Nancy emphasizes the importance of being-with that shares the nothing of Being. Being-with is not a work and resists the self-fulfillment of community. Being-with gathers all existences that are without essence, exposes the otherness of every existence and constitutes the community of others.