David Henry Hwang,the first and the only Asian American playwright ever to win Tony Award for Best Play,is best known for M.Butterfly.In his plays,David Henry Hwang shows concern on race,gender politics and identity.Yellow Face,the latest play of Hwang,is a mockumentary drama which deals with cultural identity of Asian-Americans,and few researches and studies has been done on this play in China so far.This essay attempts to analyze the racial representations manifested in this play in order to explore its theme of the fluidity of cultural identity.