In　present　study,　sintered　Nd-Fe-B　permanent　magnets　with　different　compositions　were　fabricated　by　using　both　Spark　Plasma　Sintering　(SPS)　technique　and　conventional　sintering　technique.　Magnetic　properties,　mechanical　properties,　and　chemical　stabilities　of　the　two　kinds　of　Nd-Fe-B　magnets　are　investigated.　Compared　with　the　conventional　sintered　magnets,　SPS　Nd-Fe-B　magnets　possess　comparable　magnetic　properties,　better　corrosion　resistance　and　mechanical　properties.　Microstructure　observation　shows　that　SPS　magnet　possesses　unique　microstructure　due　to　the　special　sintering　mechanism　of　SPS　technique.　In　detail,　the　grain　size　of　Nd2Fe14B　main　phase　is　fine　and　uniform,　only　a　few　Nd-rich　phase　forms　along　the　grain　boundaries　of　Nd2Fe14B,　while　most　of　them　agglomerates　into　the　triple　junctions.　Such　microstructure　modification　restrains　effectively　the　inter-granular　corrosion　and　inter-granular　fracture　along　Nd-rich　phase　in　the　SPS　magnet.　As　a　result,　SPS　magnets　display　better　corrosion　resistance　and　mechanical　properties.