Mg2(Si,Sn)-based　materials　are　a　kind　of　environment-friendly　thermoelectric　materials　with　great　application　prospects.　The　single　phase　Mg2(Si0.4　Sn0.6)Sb0.015　solid　solution　was　prepared　by　melt　spinning　(MS)combined　with　spark　plasma　sintering　(MS+SPS).　By　comparing　with　the　same　sample　prepared　by　mechanical　alloying　(MA)　combined　with　spark　plasma　sintering　(MA+SPS),　the　effect　of　MS　process　on　its　microstructure　and　thermoelectric　properties　were　studied.　The　results　show　that　the　solid　solution　thin　belt　obtained　by　MS　is　mainly　composed　of　small　particles　of　200—500　nm.　The　obtained　sinered　dense　buck　material　has　obviously　refined　grains　and　uniformly　distributed　coherent　nano　precipitates.　Compared　with　the　samples　prepared　by　MA+SPS　process,　the　mobility　of　solid　solution　prepared　by　MS+SPS　is　significantly　reduced,　the　resistivity　increases　slightly,　the　Seebeck　coefficient　increases　significantly,　and　the　thermal　conductivity　and　lattice　thermal　conductivity　decrease　significantly.　The　thermoelectric　properties　of　Mg2(Si0.4Sn0.6)Sb0.015　solid　solution　prepared　by　MS+SPS　are　significantly　improved,　and　the　maximum　ZT　value　reached　to　1.30　at　643　K.　©　2024　Cailiao　Daobaoshe/　Materials　Review.　All　rights　reserved.