Abstract
God has involved beauty in whole the elements of human life cycle and human life seeking this beauty in foods clothes, words and actions till this beauty reachs human toward maturity and beauty, this beauty acme exhibits itself in social relations and since language is connecting bridge of this social interaction human make a relation between those phenomena having no direct relation in occurring events to catch beauty sings by them and this beauty in words usually exhibits itself in metonymy to permeate into unusual factors from the common ones. This paper deals with analyzing metonymy in Arabic and Persian Poems in comparative and based upon research and paraphrastic. And this consideration importance is in making clear and close relation between Arabic and Persian literation is human language and human literacy through which reach maturity and beauty.