Dimolybdenum　Schiff-base　complex　(DMSBC)　which　contain　O,N-bidentate　ligand　was　synthesized　and　characterized.　The　complex　can　be　used　as　a　promising　catalyst　in　the　epoxidation　of　olefins　with　tert-butyl-hydroperoxide　(TBHP)　as　oxidant.　The　catalytic　activity　of　the　DMSBC　was　optimized　by　adjusting　various　parameters.　Epoxidation　of　olefins　by　DMSBC　indicated　that　the　catalyst　exhibited　superb　catalytic　activity　with　high　conversions　up　to　99.6%,　high　selectivity　up　to　100%,　and　high　turnover　frequency　(TOF)　of　208　h−1.　Kinetic　analysis　provided　that　epoxidation　of　cyclooctene　by　DMSBC　possessed　moderate　activation　energy　(95.3　±　2　kJ·mol−1).　Furthermore,　the　calculated　pre-exponential　factor　(A)　proved　that　strong　collisions　probability　take　place　in　the　reaction.　Additionally,　the　recycle　experiments　demonstrated　that　DMSBC　could　be　recovered　and　repeatedly　applied.　©　2019　Elsevier　B.V.