Public speech demonstrates an individual’s critical thinking ability, language expression skills, and, most importantly, the depth of thought. This is also true for college students. Using the public speech platform to showcase themselves and propagate their ideas is of profound significance for the cultivation of their comprehensive quality. Taking English as a requirement for public speeches can further enhance students’ cross-cultural understanding and communication abilities. The use of various rhetorical devices to train and improve the appeal of language and the persuasiveness of speeches is worthy of in-depth discussion and practice. Therefore, combining the types of rhetorical devices with the actual situation of college students, this paper puts forward several feasible and effective suggestions and strategies, hoping to provide a reference for college students to improve the quality of their English speeches.