Abu Mohammad Khazen was one of the Iranian poets of the Dilmian era and the librarian of Sahib bin Ebad, who wrote poetry in Arabic. Diwan of this poet was unknown for centuries and was discovered in recent years and Ahmad Mahdavi Damghani brought him out of obscurity by correcting Khazan's Diwan. This anonymity and acceptable quality of his poetry made the writers to conduct a research on his poetry. With the initial reading of Divan, it was observed that his poetry is full of norm deviation. Norm deviation is a general deviation from the rules governing the language, and this is done with different methods such as defamiliarization, accentuation, rule-increasing, and rule-making. English theorist Geoffrey Leach has the most consistent theory in the field of deviance, who summarized deviance in eight topics. Therefore, in this essay, it was decided to discuss and examine the examples of non-normativeness in his poetry. It is natural that a suitable research approach for this thesis requires that a descriptive, analytical and at the same time a library method is used in the research. The question of the present research is proposed in this format: How did Abu Mohammad Khazen manage not to disrupt the process of aesthetics and conveying meaning in his normative approach? The general result of the research is that Abu Mohammad Khazen has engaged in norm avoidance in the conventional frameworks of language, therefore, he has not endangered the two principles of aesthetics and the medium of meaning.