The aim of this article is to investigate the structure of language in Ahmad poetry. Since violation of norms and defamiliarization have been used a lot in one of his works named “Kafshhaye Mokashefeh”, this work provides the data of this research. The linguistic structure of this work is analyzed by using Formalist and Structuralist models and frameworks. On the basis of this, it can be said that the poet’s stylistic innovations are manifested in various forms at phonetic, lexical and syntactic levels. In other words, the poet’s innovations at each of these levels trigger the formation of a new and unique style. The main characteristic of this new style is the harmony created between formal elements and the meaning of the poem so that the poem functions not only as a tool for conveying the message but also the emotions of the poet to the reader via the words.