A　modified　solid-phase　reaction　method　was　used　to　synthesize　the　polycrystalline　Eu3B2O6-as　a　novel　cryogenic　magnetocaloric　material.　In　addition,　investigations　into　the　magnetocaloric　effect　(MCE),　mag-netic　properties　and　crystal　structure　of　compound　have　been　precisely　completed.　The　results　indicate　that　the　compound　undergoes　a　second-order　magnetic-phase　transition　from　ferromagnetic　to　paramagnetic　at　8　K　and　has　a　hexagonal　structure　that　belongs　to　the　R-3c　space　group.　Meanwhile,　the　MCE　was　evaluated　by　using　magnetic　entropy　change　(-Delta　SM),　temperature　averaged　entropy　change　(TEC)　as　well　as　the　re-frigeration　capacity　(RC)　for　Eu3B2O6.　Under　the　field　change　from　0　to　5　T,　the　maximal　values　of-Delta　SM　and　TEC　(5)　are　38.6　and　35.7　J　kg-1　K-1,　respectively,　while　the　corresponding　RC　reaches　435.9　J　kg-1.　The　giant　low-field　MCE　facilitates　device　miniaturization　and　cost　reduction,　making　Eu3B2O6　compound　a　promising　candidate　for　cryogenic　magnetic　refrigeration.(c)　2022　Published　by　Elsevier　B.V.