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In this work, we collected and determined medicinal, aromatic, postural and rare plant species from protected Area’s of kalmand Bahadoran located in 30-105 km SE of Yazd city and Kuhe Bafg (Located in 110 km East of Yazd city) in the Yazd province. Analyses of the flora of these region’s shows that, there are 148 vascular plant species in kalmand Bahadoran region and 139 vascular plant species in Kuhe Bafg region. Main natural and floristic characteristics of this region’s are reported briefly. The results of this study shows that, in total, about 60 medicinal, aromatic and industrial plant species, about 15 grasses, 8 Legumes, 26 forbs and 23 tree and shrub species exist in this protected areas. Further more, threatened species of this region’s have been analyzed, according to the IUCN criteria. On the basis of this study, four categories of rare species so called Endangered, vulnerable, Lower risk and Data deficient are determined and the list of these species has been presented. This study shows that, there are in total, 41 threatened plant species in this protected areas. Finally, we floristic composition, and species richness of this areas, are discussed