With the ubiquitous usage of wireless, portable, and handheld devices gaining popularity in 21st century, the revolutionary mobile technology introduces digital new media to educational settings, which has changed the way of traditional teaching and learning. WeChat is one of the most popular social networking applications in China featured by its interactivity and real-time communication that has attracted attention of educators to its pedagogical value. This study evaluates the utilization of WeChat in mobile learning and, in particular, its potential for improving English pronunciation among English learners in China. It probes into the perennial problems of Chinese students in English pronunciation acquisition and oral practice, discusses WeChat’s support functions in mobile learning, demonstrates the relevant empirical studies of WeChat in teaching and learning, and analyses the potential value of using WeChat in improving English pronunciation. Examinations in this paper enable one to reflect on the strengths of mobile learning by WeChat and to explore how this social media tool is likely to solve the pronunciation difficulties of Chinese English learners. It is found that applying WeChat to English pronunciation teaching and practicing helps create better self-directed learning environment, enhance learning flexibility and improve oral learning effectiveness. It is hopefully that insights gained from examining how WeChat helps improve English pronunciation learning will shed light on further innovations of teaching designs in this area.