Nd-Fe-B　permanent　magnets　with　a　small　amount　of　CuZn5　powders　doping　were　prepared　by　conventional　sintered　method.　The　effects　of　CuZn5　contents　on　magnetic　properties　and　microstructure,　electrochemical　corrosion　resistance　of　sintered　Nd-Fe-B　magnets　were　systematically　studied.　The　results　show　that　the　magnetic　properties　of　magnets　do　not　have　a　significant　variation　by　CuZn5　powders　doping;　the　coercivity　of　magnets　rises　gradually,　while　the　remanence　of　the　magnets　decreases　a　little　with　increasing　of　the　CuZn5　amount.　The　CuZn5　doped　magnets　have　more　positive　corrosion　potential,　E-corr,　and　much　lower　corrosion　current　density,　i(corr),　than　the　magnets　without　CuZn5　doping,　indicating　CuZn5　doping　could　improve　the　corrosion　resistance.　Both　Zn　and　Cu　enrich　mainly　into　the　Nd-rich　phase,　fully　improve　the　wettability　between　the　Nd-rich　phase　and　the　Nd2Fe14B　phase,　and　repair　the　defects　of　the　main　phase,　so　the　coercivity　of　magnets　doped　with　CuZn5　powders　rises.　Such　microstructure　modification　effectively　restrains　the　aggressive　inter-granular　corrosion.　As　a　result,　the　CuZn5　doped　magnet　possesses　excellent　corrosion　resistance　in　NaCl　electrolyte.　(C)　2014　AIP　Publishing　LLC.