Realizing　the　deformation　and　texture　formation　mechanism　of　the　HD　SmCo5　magnets　were　rarely　re-ported,　which　restricted　the　further　enhancement　of　its　magnetic　properties.　Here,　we　prepared　the　ani-sotropic　SmCo5　nanocrystalline　magnets　by　hot　pressing　and　hot　deformation　(HP-HD).　The　magnetic　properties,　texture,　and　microstructure　of　the　magnets　with　different　height　reductions　were　systematically　studied.　Based　on　the　characterization　results,　for　the　HD　SmCo5　nanocrystalline　magnets,　it　is　inferred　that　the　deformation　and　texture　formation　mechanism　are　attributed　to　the　coordination　of　precipitated　phases,　dislocation　slip,　stacking　fault　formation,　and　regular　grain　rearrangement.(c)　2022　Published　by　Elsevier　B.V.