Abstract: Based upon the “critical metaphor analysis framework” put forward by Charteris-Black in 2004, the present study explores the metaphors in 15 college English teachers' narrative discourse. This article analyzes 6 out of 20 types of conceptual metaphors generalized on the basis of 2833 metaphor instances in the discourse. Analyses show that through concealing and highlighting certain features of the academic profession, the interviewees express attitudes, make evaluation, and construct their academic professional identities. The study indicates that in natural discourse, the use of metaphors is closely related to identity construction. By utilizing metaphors, the speakers express their attitudes towards and evaluations of the metaphorical objects, and therefore construct identities.