One of the most common forms of popular literature and poetic couplet is Bvmysrvdhay different parts of Persia and Persian language countries. Couplet with respect to the pre-Islamic Iranian literature and history in brief and talent of expression and reflection of people''s lives has always been known and popular format. In this paper, based on a research project about the author of the popular poetic literature, poetry and Amhsrvd of 302 species, 100 species with different names and functions Have been written in the form of couplets. The purpose of this article is to show the range and geographical distribution couplet in Persian and Persian-speaking countries. The results show that the use of couplets with the Masnavi, both of which are Iranian, equally 67% of all species of poetic literature community constitutes 33 percent in the couplet, and names like bit-Bayati, couplet, Dvbytv, Chharbytv, songs, Trunk , Fhlvyat, Klhfryad, parting, four, Sytk, Chhardanh, Chhargany, Dstvn, Bydgany and recognized.
)