“身份”是自我的一种认知范畴,以及作为对这种认知的再现。主体在世,必然通过具体的身份来确定、展示并规范自我。本文基于对身份的这一理解,探析身份之于自我的意义所在。首先,身份是自我表意的符号化,身份即自我的命名。其次,身份可引发自我作向上或向下的还原。最后,身份之于自我的意义在于,身份是自我认知的符号修辞,使自我得以维系、规范,并将自我意义的诸方面文本化。 “Identity ” is a cognitive category of self, as well as a reproduction of this cognition. The main body is alive, certainly through specific identity to determine, display and regulate themselves. Based on this understanding of identity, this article explores the significance of identity to self. First, identity is the symbolization of self-expression, identity is self-naming. Second, identity can trigger self-reliance to move up or down. Finally, the significance of identity to self lies in the fact that identity is a symbolic rhetoric of self-awareness that enables the self to maintain, regulate, and textualize aspects of self-importance.