The　high-temperature　oxidation　resistance　is　a　critical　evaluation　index　for　the　practical　applications　of　Nd-Fe-B　sintered　magnets.　In　this　paper,　the　high　temperature　(＞　523　K)　oxidation　behavior　of　the　recycled　Nd-Fe-B　sintered　magnets　was　investigated　and　compared　with　the　original　magnets.　The　results　show　that　both　magnets　exhibit　similar　high-temperature　oxidation　characteristics.　The　recycled　magnets　oxidized　after　300　h　at　673　K　possesses　remanence　(B-r)　of　1.189　T,　coercivity　(H-ci)　of　1688　kA/m,　and　maximum　energy　product　[(BH)(max)]　of　268　kJ/m(3).　Compared　with　the　recycled　magnet　before　oxidizing,　the　oxidized　recycled　magnets　retain　96.0%　of　B-r,　85.2%　of　H-ci,　and　92.2%　of　(BH)(max),　respectively.　The　recycled　magnets　negatively　influence　the　high-temperature　oxidation　resistance　compared　with　the　original　magnets,　demonstrating　the　recycled　magnets＇　applicability.　(C)　2021　Published　by　Elsevier　B.V.