Abstract: Code-switching is the use of two or more linguistic varieties in the same conversation or interaction. Campus is a good place that code-switching would happen. This paper discusses three contexts of code-switching first, and then points out that code-switching is used more often by the students on campus than by the people outside the campus. Following the discussion, the author analyzes the factors influencing code-switching from the aspects of linguistic reality, social factors and psychological factors. code-switching is a communicative strategy between teachers and students, or between the students. Through the analysis, the author aims at helping the readers to get familiar with the reasons of code-switching, so that they will be able to understand others and achieve a better and harmonious effect in communication with others.

Key words: code-switching; factors; communication

摘要：语码转换是指在同一场对话或者活动时用了两种或更多的语种。校园是一个发生语码转换比较多的地方。本文讨论了三种语码转换的语境，指出大学生比一般人更多地用到语码转换。在了解语码转换的语境后，作者也分析了影响语码转换的三大主要因素：语言现实，社会原因和心理原因。通过分析旨在帮助读者了解，语码转换是人们交流时采用的一种有效策略；了解语码转换，可以在与人交流时更好地理解对方，从而使日常交流与沟通更趋和谐。

关键词：语码转换；因素；交流