Rhetoric and vocabulary develop in interaction,which is determined by the nature of macro-language.Lexical rhetoricization is the process in which words as linguistic symbols are transformed into rhetorical symbols in the operation for the rhetorical subject to reach the rhetorical will.During this process there exist two different forms of change and invariance,and its mechanism of generation can be recognized from both inside and outside the language.Rhetorical lexicalization can be interpreted broadly and narrowly,and this study primarily focuses on the latter.The narrow interpretation refers to the process in which the variant forms of words or non-words in rhetorical phenomena change into words in the diachronic development.Its forms are mainly manifested in the solidification of new forms,new constructions,new meanings and new functions,and its development has three different stages:initialization,maturation and solidification.