Abstract: As the representation of the post-depth psychology,the subject theory of Jacques Lacan has great tension.By comparing ego with the other and introducing language and unconsciousness into subject resreach,he changed Cartesian "ego cogito ergo sum" into "the other cogito ergo sum",then clear up the substaintial subject of the modern sense.Under the present context in which cultural research is popular,Lacan opened a new path to the subject function and the transiation between subject and identity while decons...