Abstract: Born in a Chinese American family, living in the ghetto and married Irish American, Gish Jen has unique life experiences, which are unique source materials in her writings. Her works are the contemplation of American ethnic minority and multi-culturalism. She adheres to multi-culturalism and gives full expression of the pluralism of ethnicity and cultural identity. This paper is an analysis of the different ways and processes of identity construction in Mona in the Promised Land. It seems that the cultural identity of ethnic minority written by Jen is mobile and hybrid, and the postethnicity is also exposed.

Key words: Key Words: multi-culturalism, ethnicity, identity, identity construction, postethnicity