In the context of identifying spontaneous Forage species; our inventory focused on the study of the floristic diversity of pasture lands in the DOUCEN region. The floristic surveys carried out in four grazing stations, made it possible to identify 28 species which are divided into 16 families, our results showed the dominance of Poaceae, Asteraceae and Chenopodiaceae which seem well adapted to the aridity of the environment. The results we obtained; show Astragalus armatus during the study period,as the most dominant species which shows that the region is subject to the action from the pasture and the total density is low in the four stations from 0.2 to 0.3 plants/Surface, this shows their exposure to accentuated grazing. The PCA study divided the species into distinct homogeneous groups and allowed us to characterize each station. One of the major points is to think about sustainable management of grazing areas;