Abstract: Social schema is an important conception in social cognition. With the development of 搘arm?cognition, the study of social schema is more concentrated on the influence which social environment and human sensibility have on the cognition, and has syncretized more categorical thinking than before. This article combined native and external related study, expatiating the results of categorical study of social schema, including category activation, application and inhibition.

Key words: social schema, category, categorize, stereotype.