The　efficient　regeneration　of　rare　earth　secondary　resources　of　sintered　Nd-Fe-B　is　of　great　significance　for　the　recycling　economy　of　rare　earth　resources.　Since　the　mechanical　properties　of　recycled　magnets　have　a　crucial　impact　on　promoting　its　commercial　application,　tensile　strength,　compressive　strength,　hardness　and　fracture　toughness　of　the　original　sintered　Nd-Fe-B　magnet　and　the　recycled　magnet　were　systematically　studied　and　the　mechanism　was　illustrated　based　on　the　analysis　of　the　chemical　composition　and　microstructure.　The　main　fracture　mechanism　of　recycled　sintered　magnets　is　intergranular　fracture.　The　fracture　toughness　of　recycled　sintered　magnets　is　slightly　higher　than　that　of　original　magnets,　but　the　bending,　compressive　and　hardness　of　recycled　sintered　magnets　are　slightly　lower　than　that　of　original　magnets.　The　differences　in　mechanical　properties　are　mainly　attributed　to　the　higher　content　of　rare　earth　and　grain　boundary　phases　in　recycled　magnets.　In　summary,　the　regenerated　magnet　has　the　similar　mechanical　properties　as　those　of　the　original　magnet,　which　can　fully　meet　the　requirements　of　the　product.