本文從拉康的語言觀點剖析了象徵符徵的性質與運動邏輯，以及跨界想像層與真實層的結構性作用。針對想像層─象徵層軸線的分析，本文置焦於符徵與符指兩道秩序間的阻絕關係，凸顯了意義的不穩定性，必須依賴符徵鏈的運動而加以確定的意義生產狀況。象徵層─真實層的軸線上，除了闡述拉康對於象徵符徵命名空無的創造論觀點外，也藉由符徵的物質性及小對體的概念來強調語言無法涵蓋、卻又是語言得以進行的核心關鍵。透過三位一體的結構化作用，除了揭示人類進入語言之後面臨的原初根本狀況，更能理解整個結構如何觸發表意鏈並產生意義效果的動態過程。

This essay addresses the logic and the movement of the signifier in the Lacanian framework, based on its functioning in the register of the Symbolic across both that of the Imaginary and the Real. Regarding the Imaginary-Symbolic axis, by highlighting the barred relationship between the signifier and the signified, this part explores the unstable nature of meaning and the way meaning effects are produced in signifying chain. As for the Symbolic-Real divide, the creationist view of language that pure signifier names nothing is specified and the materiality of signifier, as closely related to the concept of objet petit a, is presented as the hard kernel beyond language which nonetheless drives language. By developing the triadic structuration of language, this essay elaborates the primordial condition that human beings enter into with language and reveals the dynamic process through which the signifying chain is triggered and proceeds to move endlessly.