Lewis Carroll`s second Alice book, Through the Looking-Glass, shows the typical Carrollian theme of language and logic more directly than the first one, and helps to understand the logic and aesthetical function of nonsense, and the problem of language and the subject which occupy also an important critical position in modern literary theory. And this paper is focused on the mirror image in the book. The mirror image in Through the Looking-Glass poses the problem of reality and fiction, identity and the subject, desire and language, as discussed in the theories of psychoanalysis and language, Lacan`s "mirror stage". The mirror reflects the subject and reality directly but conversely, thus blurring the borderline between the real and the fictional world. Lacan, in his discussion on the "mirror stage", problematises the traditional concept of the subject`s identity and shows the function of language in the construction of the subject. The mirror image in Through the Looking-Glass, not only makes problematic the distinction between the real and the unreal, but also provides a world where "the imaginary" and "the symbolic" co-exist and shed light on the possibility of a new writing: delire. Delire or a writing in which desire emerges to the linguistic surface and controls over the speaking subject proves how edesire relates to language and the subject in the process of writing. And the question of language and the subject discussed in Carroll`s Through the Looking-Glass is a version of th writing of desire or delire. Carroll`s language of desire in the mirror world deconstructs the existing view of language and desire which centers on the depth, oppression, structure, stability, etc. And this deconstructive practice of Carroll, according to the Deleuzian philosophy of "surface", "nomad", and "becoming", is another contribution to the modern debate on language and literature.