Using　pulsed　laser　deposition,　multiferroic　La2/3Sr1/3MnO3(LSMO)/BaTiO3(BTO)　composite　films　are　deposited　on　LaAlIO3(LAO)　(001)　substrate.　X-ray　diffraction　results　show　that　LSMO　and　BTO　films　exhibit　only　(001)　orientation.　Film　smoothness　is　verified　by　their　low　root-mean-square　surface　roughness　values　as　1.4　nm　from　atomic　force　microscope　study.　The　magnetic　and　the　electric　properties　of　these　composite　films　are　investigated.　Furthermore,　the　variations　of　resistivity　and　metal-insulator　transition　temperature　T-MI　of　LSMO,　induced　by　the　external　electric　field,　are　studied.　The　resisitivity　is　reduced　while　the　T-MI　is　enhanced　for　hole　accumulation　state　which　is　induced　by　negative　electric　field　across　ETO　layer.　In　contrast,　the　resistivity　is　enhanced　while　the　T-MI　is　reduced　for　hole　depletion　state,　which　shows　coupling　between　magnetic　and　electric　order　parameters,　i.e.,　there　is　a　magnetoelectric　effect　induced　by　electric　field.