Physical　vapor　deposition　and　melt-spinning　hydrogen　decrepitation　technique　were　applied　to　prepare　Tb　nanoparticles　and　NdFeB　powder,　respectively.　Microstructure　and　magnetic　properties　of　the　sintered　NdFeB　magnets　with　different　content　of　Tb　nano-particle　addition　were　systematically　studied.　With　the　increase　of　Tb　content　in　the　magnets,　the　coercive　force　rose　gradually,　while　the　remanence　of　the　magnets　decreased.　Microstructure　observation　showed　that　Tb　distributed　mainly　in　the　boundaries　of　the　crystal　grains　of　the　main　phase.　Such　a　distribution　of　Tb　in　the　magnets　improved　the　coercive　force,　reduced　the　consumption　amount　of　Tb,　and　inhibited　the　side　effect　of　Tb　on　remanence　and　maximum　energy　product　of　the　magnets　simultaneously.