SmCo7-xFex(x=0,　0.4,　1,　2)　amorphous　powders　prepared　by　high-energy　milling　were　sintered　into　bulk　nanocrystalline　magnets　using　spark　plasma　sintering　technique　(SPS).　XRD　patterns　show　that　the　powder　becomes　amorphous　after　milled　for　5　h;　and　the　magnet　exhibits　stable　TbCu7　structure　after　sintered　by　SPS.　TEM　observation　indicates　that　the　microstructure　of　the　magnet　is　composed　of　SmCo7-xFex　single　phase　grains　with　an　average　grain　size　of　20　similar　to　50　nm.　Magnetic　measurement　shows　that　the　SmCo6.6Fe0.4　magnet　has　the　magnetic　properties　as　following:　H-i(c)=992.8　kA/m,　B-r=0.634　T,　and　(BH)(max)=69.75　kJ/m(3).