WeChat is one of the most popular social media mobile apps in China and has become an important means of online communication among Chinese both in China and abroad. Despite much research about WeChat's uses and applications, few studies have examined the role of WeChat in international exchanges. This paper explores the functions of WeChat in Chinese exchange programs at a Midwestern state university in the United States. This project is a case study of one faculty member's efforts to recruit international students and contribute to campus diversity with the support of her institution. Employing rhetorical autoethnography, the paper analyzes the author's own communication experience with Chinese exchange students in 2016-2019 before the COVID-19 pandemic. Such communication initially took place completely online via WeChat and was later supplemented with face-to-face interaction after the students' arrival in the United States. WeChat enabled the author to establish ethos, build identification, present multiple identities, develop rapport, and provide support. WeChat's overlapping informative, persuasive, and supportive functions contributed to international recruitment and students' cultural adaptation abroad. Mei Zhang. Using WeChat to Communicate with Chinese Exchange Students. China Media Research 18(1): 84-1005 Keywords: WeChat, social media, mobile communication, Chinese students, Chinese exchanges