通感是一种极具表现力的修辞手法。从修辞学和认知语言学两个方面论述了通感的内涵,指出通感不再是一种简单化、概念化的语言现象,更不是为了表达而选择的手段,而是特殊的认知现象,也是一种特殊的隐喻。此外,还从认知角度分析了通感和隐喻之间的关系,揭示了其独立性和排他性的特征。 Synesthesia is a very expressive rhetorical device. From the perspective of rhetoric and cognitive linguistics, the connotation of synaesthetic is discussed. It is pointed out that synaesthesia is no longer a simplistic and conceptual linguistic phenomenon, nor is it a means of choice for expression, but a special cognitive phenomenon , Is also a special metaphor. In addition, the relationship between synaesthesia and metaphor is also analyzed from a cognitive perspective, revealing its independence and exclusivity features.