Political poetry in Persian literature with the Constitutional Revolution was able to rise to the top of poetic themes, After the constitution, it was considered in the course of modern poetry and was established as a literary type in contemporaryliterature In this article, with the aim of recognizing the linguistic system of this type of literature and its pathology from the Constitutional Revolution to the victory of the Islamic Revolution, relying on the poems of Nima Yoshij as the leader of this poem in the Pahlavi period, its main slips and linguistic defects have been studied. The study shows that factors such as the emotional entry of poets into this theme, the importance of thought over language, attention to the popular audience, highlighting the style and weakness of poetry, contemporary political poetry has suffered linguistic damage. This can be seen even in Nima"s poem, which is itself a critic of the factors mentioned. Lack of observance of the linguistic system in grammatical logic, stereotypical use of symbolic words, and improper aberrations are the most important linguistic slips of Nima"s political poetry These cases are very evident in the first decades of his poetry, but in the last decade, Nima has been able to reach a language that is free from serious harm.