词汇是语言的骨骼,词义是词汇的精髓,词义的变异使得语言不断变化和更新。本文从语用学角度来分析和阐述词义变异的理论基础,以及词义变异的原因和方式,从而说明词汇在语言交际中的重要作用,以及词义变异与语用环境的密切关系。 Vocabulary is the bones of the language, meaning is the essence of the vocabulary, the variation of meaning makes the language constantly changing and updating. This paper analyzes and elaborates the theoretical basis of word meaning variation and the reasons and ways of word meaning variation from the perspective of pragmatics, thus illustrating the important role of words in language communication and the close relationship between word meaning variation and pragmatic environment.