Abstract: Social comparison is a common social psychological phenomenon for human being. In western, the studies on social comparison are becoming an important domain for psychologists especially for social psychologists. The article mainly reviewed the studies of social comparison from Festinger in 1954, including the concept、types、motivations and strategies of social comparison. In the end, the author puts forward some perspectives for further studies on social comparison in the future.

Key words: social comparison, upward comparison, downward comparison.