Despite individual differences, all bilinguals share the ability to act in their native language, in their second language, and to switch back and forth between the two languages they know (Van Hell, 1998). Chinese is the largest Asian American ethnic group in the United States. Their use of code-switching is an increasingly important issue in understanding their language choice and language development. This study on code-switching between a 1.5 generation Chinese child and her parents will add perspectives on the growing literature of Chinese American families, their language interaction and language development.