The　Ce68Al10Cu20Nb2　bulk　amorphous　alloy　was　prepared　by　injection　casting　into　copper　mold.　The　corrosion　behaviors　of　the　alloy　in　1mol/L　NaOH　solution　were　investigated　by　potentiodynamic　polarization　curve　method　and　electrochemical　impedance　spectroscopic　(EIS)　technique.　The　surface　morphology　of　passive　film　was　investigated　by　scanning　electron　microscopy　(SEM).　The　composition　of　passive　film　was　characterized　using　X-ray　photoelectron　spectroscopy　(XPS).　The　results　show　that　the　Ce68Al10Cu20Nb2　bulk　amorphous　alloy　exhibits　a　self-passivation　phenomenon　in　1mol/L　NaOH　solution　with　the　passive　region　from　-0.25V　to　0.50V　and　the　passive　current　density　between　10-5-10-6A/cm2.　The　passive　film　obtained　through　electrochemical　passivation　consists　of　a　porous　outer　layer　and　a　dense　inner　layer.　The　outer　layer　is　mainly　composed　of　the　oxides/hydroxides　of　Ce　and　the　oxides　of　Nb,　the　inner　layer　is　composed　of　the　oxides/hydroxides　of　Ce,　Cu,　Al　and　the　oxides　of　Nb.　The　content　of　hydroxides　gradually　decreases　and　the　content　of　oxides　gradually　increases　from　the　surface　to　the　inside　of　the　passive　film.　©　2016,　Journal　of　Materials　Engineering.　All　right　reserved.