This analytical review explores the nonlinear links between crude oil prices,gold prices and Algeria Dinar real effective exchange rate for the period January 1990 toDecember 2016, we use in this paper a Markov Switching Auto-Regressive model(MSVAR) developed by Hamilton (1989), the empirical results show that there are twosignificant regimes, and the transitions between the two regimes followed the discounts ofthe Algerian Dinar value by the Central Bank (1991 and 1994), the results show also thatoil prices affect the exchange rate by the limited manner especially in the first regime.