Abstract: Marakan protected region with an area of 105069 ha, is located in North West of Iran (west Azerbaidgan province), between 38� 42` to 39� 6` north latitude and 45� 5` to 45� 37` east longitude. In this study flora of this region was determined by using available references. We encountered 282 Species that belongs to 167 Genera and 47 Families. The largest families of region are: Asteraceae with 43 species, Fabaceae with 28 sp., Poaceae with 26 sp. and Rosaceae with 25 sp. The life form spectrum was characterized according Raunkier`s system. The life form spectrum observed was: Therophyte 31.91%, Hemichryptophyte 26.95%, Chamaephyte 16.31%, Phanerophyte 15.06% and Cryptophyte 9.26%. The phytocorya distribution of species are as follow: IT 65.25%, Es 5.31%, Med 1.06%, IT, Es 19.15%, IT, Med 2.85%, Es,Med 1.78%, Endm 4.25%, Cosm 0.35%.