Bulk　nanocrystalline　SmCo6Fe　sintered　magnet　was　prepared　by　Spark　Plasma　Sintering　technique　(SPS).　XRD　patterns　show　that　the　magnet　exhibits　a　stable　TbCu7　structure.　TEM　observation　indicates　that　the　microstructure　of　the　magnet　is　composed　of　SmCo6Fe　single　phase　grains　with　an　average　grain　size　of　30　nm.　Magnetic　measurement　shows　that　under　9　T　magnetic　field,　the　coercivity　of　the　magnet　reaches　1.12　T;　the　saturation　magnetization　and　the　remanence　are　1.13　and　0.67　T,　respectively.　The　magnet　has　a　(BH)(max)　of　75.6　kJ　center　dot　cm(-3).