本文剖析索绪语言符号观的概念,从内部着手,探析语言符号的概念、音响形象和双重性,从他提出的二分法观点,解析任意性与线性特征的关系与不变性和可变性的关系,并提供例子来证明其内部关系。 This article analyzes the concept of the concept of language symbol in Suoxu and explores the concept, sound image and duality of language symbol from the inside. From the dichotomy view he proposed, this paper analyzes the relationship between the relation of invariant and linear features and the relationship between invariance and invariance , And provide examples to prove its internal relations.