杨万里诗助词“来”的使用频繁，功能复杂。在穷尽式统计和分类静态描写的基础上，通过共时与历时的比较，探讨了助词“来”的各种功能间的内在联系和相互影响，以尽可能历史地描述出助词“来”产生的原因和发展的历程。 Yang Wanli poetry auxiliary “to” frequent use, complex functions. On the basis of exhaustive statistics and classification of static description, through the comparison of synchronic and diachronic periods, this paper explores the internal relations and mutual influences among the various functions of the auxiliary word “Lai”, so as to describe as far as possible the generation of the auxiliary word “来” The reason and the development process.