Abstract: Social exclusion has drawn more and more attention as a pervasive and negative social experience in recent years in psychological area. The concept of social exclusion refers to the phenomenon that people’s need of belongingness and social relationships is thwarted because the one is excluded by a group or other people. The paper introduces the potentially powerful impacts of social exclusion on excluded individuals, including cognitive, emotional, physiological and behavioral. In the end, some prospects for the further research are put forward, such as constructing psychological theories of social exclusion and realizing the significance of social exclusion researches in China

Key words: social exclusion, cognition, emotion, behavior