Nd-Fe-B-type　die-upset　magnet　with　high　electrical　resistivity　was　fabricated　by　hot-deforming　the　mixture　of　melt-spun　Nd-Fe-B-type　flakes　(MQU-F:　Nd13.6Fe73.6Co6.6Ga0.6B5.6)　and　Dy-containing　salts:　eutectic　(DyF3-LiF)　salt　mixture　and　DyF3　single　salt.　Profound　electrical　resistivity　enhancement　was　feasible　in　the　Nd-Fe-B-type　die-upset　magnet　by　adding　Dy-containing　salts.　More　profound　electrical　resistivity　enhancement　was　achieved　in　the　magnet　added　with　dielectric　eutectic　(DyF3-LiF)　salt　mixture　with　respect　to　the　magnet　added　with　single　DyF3　salt.　This　was　attributed　to　better　electrical　insulation　between　the　flakes　by　forming　more　continuous　coverage　of　the　flake　interface　with　the　easily　melted　dielectric　salt.　Coercivity　of　the　die-upset　magnet　was　also　profoundly　enhanced　by　optimal　addition　of　Dy-containing　salts,　and　this　was　attributed　to　substitution　of　some　Nd　in　the　Nd2Fe14B-type　grains　near　flake　surface　by　Dy　atoms　from　the　added　salt.　Kerr　microscopy　revealed　that　for　both　the　magnets　with　or　without　salt　addition,　formation　of　reverse　domain　initiated　mostly　inside　the　flake.　Reversed　domain　started　to　form　at　higher　reverse　field　for　the　magnet　added　with　Dy-containing　salt　than　for　the　magnet　without　salt　addition.　Practical　demagnetization　occurred　largely　by　formation　of　new　reverse　domains　at　random　places　rather　than　enlargement　of　previously　formed　reverse　domain　for　both　the　magnets　with　or　without　salt　addition.