The　alloying　elements　Ti　and(or)　Cu　were　added　into　the　intergranular　regions　of　sintered　Nd-Fe-B　magnets　and　their　effects　on　microstructures　and　magnetic　properties　of　the　magnets　were　investigated.　The　results　showed　that　a　small　amount　of　Ti　and(or)　Cu　additions　can　enhance　the　coercivity　and　have　little　effect　on　the　remanence　of　Nd-Fe-B　magnets.　Compared　with　individual　addition　of　pure　Ti　or　Cu　elements,　Ti　and　Cu　co-addition　of　intergranular　region　is　more　efficient　to　improve　the　coercivity　of　the　magnets.　The　improvement　of　the　coercivity　can　be　attributed　to　the　segregation　of　Cu　element　on　the　surface　of　the　magnetic　phase　(Nd2Fe14B)　and　the　occurrence　of　fine　Nd-Fe-Ti　particles　near　grain　boundaries.　The　former　can　prevent　the　magnetic　coupling　of　Nd2Fe14E　grains　to　a　certain　degree　and　impede　effectively　the　propagation　of　reversed　domain　walls　through　the　magnetic　phase　grains.　The　latter　can　inhibit　the　growth　of　magnetic　phase　grains　during　the　sintering　process,　resulting　in　a　finer　grain　size.　Both　are　beneficial　to　the　coercivity　enhancement.　With　increasing　Ti　content　above　0.8%,　a　strip　Ti-rich　phase　appears　in　the　intergranular　region,　resulting　in　the　dramatic　reduction　of　the　remanence　of　Nd-Fe-B　magnets.