Allegory is one of extensive and prolific discussions in different periods of Persian poetry. Regarding the importance of this subject in rhetorical and expositional books, numerous definitions have been offered for it. Khagani who is considered one of the representatives of Saljuk era, has special view on the stylistic allegory. The writer, in this essay, has briefly dealt with the definitions of allegory and has surveyed Khagani’s poetry in two main categories; that’s, the aims and instruments by which the poet used the allegory, and concluded that in the first step the main part of his thoughts which are common with the poets of his time, have been expressed as allusion in the teachings and tenets of The Holy Qur’an, secondly, the aims and instruments used in Khagani’s allegory testify that they are unique and specific for him.