“Heterogeneity” is an important concept in Erving Goffman’s micro-sociology. In accordance with this concept, the individual is compared to an actor, whose behavior is performative. The paper adopts the concept of “heterogeneity” to study the translator’s “self” role-play, his/her awareness of situation and identity, and the inter-relatedness between “self” and translation behavior and its criticism, and draws the following conclusions: firstly, translation, like drama, is a product of historicalization and contextualization, and also an important way for the translator to implement “impression management”. Secondly, a translator is like an actor who possesses both “I” self-cognition and “Me” self-cognition. The translator has to take into account the expectations of others and the society while exerting his own will and personality through his translation work. Finally, translation is not only a phenomenon in the sense of epistemology, but also a phenomenon in the sense of existentialism, which reflects the “human” rather than “corporeal” nature of translation, and the unity of translation facts and values, and that of the translator’s purpose, behavior, and result.