在关于通感机理的诸多研究中,目前多数人认同阿莉西亚·卡列哈斯的研究成果。本文以神经解剖与生理学为资料,与之作了理论链接,以提供这一成果的神经学基础。从中西对比中可知通感不是舶来品,祖国诗歌通感修辞源远流长。通感可分类为狭义和广义两大类,每类又可细分为两种。本文通过范例着重对通感的变体进行了辨析和生成机理的探讨。最后,强调了通感在诗歌写作中的重要性。 In many studies on the mechanism of synaesthetic, most people agree with the research results of Alicia Callejas. In this paper, neuroanatomy and physiology as the data, made a theoretical link to provide the neurological basis for this achievement. From the contrast between China and the West we can see that synaesthesia is not a foreign product, and the sense of synaesthesia of the motherland’s poetry goes back to ancient times. Synesthesia can be classified into narrow and broad categories, each category can be subdivided into two. This article emphatically emphatically explores the synaesthesia variants and the formation mechanism. Finally, it emphasizes the importance of synaesthesia in poetry writing.