Computer English plays a vital role in academic study for students majored in Computer Science.As the fast development of information technology,traditional English teaching methods cannot meet students’learning needs.WeChat is the most popular mobile application of social networks in China.Its features of real-time communication,interactivity and utilization of fragmentary time attract educators’attention to its application in teaching.This paper carried out an empirical study to explore applying WeChat in Computer English teaching.With WeChat,an English interaction environment was built,and interactive learning activities were implemented.The experimental results show teaching based on WeChat is effective to improve students’Computer English skills.