Abstract: Written from the definition and change of the identity concept, this paper introduces western researchers?studies on the development of ethnic identity, ethnic identity and mental health, ethnic identity and acculturation, and ethnic identity and personality development, etc, and summarizes some study strategies of ethnic identity. The paper finally points out, under the social background of Western Exploration, the realistic significance of the study of ethnic psychology, and especially of the study of macroscopic ethnic psychology to our country.

Key words: ethnic identity, acculturation, study strategies.