Nafsat ol-Masdoor is one of the outstanding artificial and technical texts in prose that remained from the Mongol era. This text has not only been mainly written to record historical events, but also, the writer has been intended to explain his biography and problems. The writer uses various literary arts to affect the addressee and one of these components is poetic affection. Affection or sensation as the spiritual background of every artistic work is inner and the most fundamental element in the formation and integration of text. So, studying it seems necessary more than any other element in literary texts. The paper has been aimed at analyzing affection elements in the historical prose of Nafsat ol-Masdoor and studying the poetic nature of the work, in terms of affection presented by it. In the paper, all affectionate approaches have been primarily been studied; then, after a short look at the poetic nature of the historical prose of Nafsat ol-Masdoor , affection element and poetic polishment of it would be studied, in the work. Continuous affection and its high level of coordination in Nafsat ol-Masdoor have made the book exempted from what is considered as pure historical aspect and has created prose poetry so that image element would be completely served in it. The research results have been obtained through library method and based on content analysis.