Among the four basic English skills, writing skills are the most demanding. English writing is a big difficulty for every English learner. To write a good composition, in addition to conforming to the grammatical norms and logic, The key is to master how to use English rhetoric to make language expression more accurate, vivid, vivid and powerful. At the same time, the rhetoric mode of language is closely related to the structure of language itself. English and Chinese are two different languages, so the rhetorical devices are not the same. However, there are many rhetorical devices in English. This paper introduces several common rhetorical devices, guides the application of English Rhetoric in writing through examples, and analyzes the choice of words in the process of writing.