We　study　the　spin-dependent　electron　transport　in　a　special　magnetic-electric　superlattice　periodically　modulated　by　parallel　ferromagnetic　metal　stripes　and　Schottky　normal-metal　stripes.　The　results　show　that,　the　spin-polarized　current　can　be　well　controllable　by　modulating　the　magnetic　strength　of　the　ferromagnetic　stripes　or　the　voltage　applied　to　the　Schottky　normal-metal　stripes.　It　is　obvious　that,　to　the　system　of　the　magnetic　superlattice,　the　polarized　current　can　be　enhanced　by　the　magnetic　strength　of　ferromagnetic　stripes.　Nevertheless,　it　is　found　that,　for　the　magnetic-electric　superlattice,　the　polarized　current　can　also　be　remarkably　advanced　by　the　voltage　applied　to　the　Schottky　normal-metal　stripes.　These　results　may　indicate　a　useable　approach　for　tunable　spintronic　devices.　(c)　2006　Elsevier　B.V.　All　rights　reserved.