The antioxidants are the subject of many studies, because in addition to their use as preservatives in food products by replacing the synthetic antioxidants, they intervene in the treatment of many diseases. In this study, we evaluated the antioxidant properties of leaves of atriplex halimus L as well as flowers and stems of haloxylon scoparium pomel. Butanolic Fractions of flowers of the two plants have a higher total phenols content; the fraction of ethyl acetate and butanol, for these two plants, presents a better total antioxidant capacity, and higher activity to trap the DPPH radical, radical OH and the ABTS radical cation.