In　this　study,　we　focus　on　the　short　-process　regeneration　of　high-Ce　content　sintered　Nd-Ce-Fe-B　magnet　scraps,　aiming　to　enhance　the　coercivity　and　overall　magnetic　properties　through　the　reconstruction　of　grain　boundaries　(GBs)　based　on　the　analysis　of　rare　earth　(RE)　loss　and　proportions　at　each　stage　of　the　regeneration　process.　CeH　x　,　(Nd　0.75　Pr　0.25　)H　x,　and　their　mixtures　were　added　as　intergranular　additives　to　produce　sintered　magnets.　When　2.31　wt%　of　(Nd　0.75　Pr　0.25　)H　x　is　added,　a　high-performance　magnet　is　obtained　with　the　remanence　of　11.72　kG,　coercivity　of　11.56　kOe,　and　maximum　energy　product　of　32.23　MGOe,　reaching　performance　recovery　rates　of　98.8%,　103.5%,　and　98%,　respectively,　of　the　original　magnets.　It　is　indicated　that　the　intergranular　additives　were　beneficial　to　the　formation　of　continuous　smooth　RE　-rich　GBs.　In　addition,　a　portion　of　Nd/Pr　diffused　into　the　2:14:1　phase　as　a　partial　replacement　for　Ce,　resulting　in　the　migration　of　Ce　from　the　interior　of　the　grains　to　the　outer　region.　This　led　to　the　formation　of　new　RE　-rich　triple　junction　phases　on　the　exterior,　thereby　reducing　the　magnetic　dilution　effect　of　Ce　in　the　primary　phase　and　enhancing　the　magnetic　crystal　anisotropy.　These　findings　offer　new　insights　into　the　regeneration　of　high-Ce　sintered　Nd-Ce-Fe-B　scraps.