语言变异是偏离语言常规的一种语言形式。诗歌中有八种语言变异现象，即：词汇变异、语音变异、语法变异、书写变异、语义变异、语域变异、历史时代变异和方言变异。从美学功能角度来了解诗歌的语言变异，能达到更好地欣赏诗歌的目的。 Linguistic variation is a linguistic form that departs from linguistic conventions. There are eight kinds of linguistic variations in poetry: lexical variation, phonetic variation, grammatical variation, writing variation, semantic variation, register variation, diachronic variation and dialect variation. To understand the linguistic variation of poetry from the perspective of aesthetic function can achieve the purpose of better appreciation of poetry.