A　multiferroic　0.8BiFeO(3)　-　0.2BaTiO(3)　(0.8BF-BaT)　ceramic　was　prepared　by　solid-state　reaction　to　study　the　magnetic　control　of　its　ferroelectric　polarization　and　ferromagnetic　properties.　The　influence　of　the　magnetic　field　H　on　the　ferroelectric　polarization　of　0.8BF-BaT　ceramic　was　investigated.　The　maximum　displacement　current　density　Jm　and　the　remanent　polarization　Pr　of　0.8BF-BaT　increased　by　35%　and　20%　respectively　after　it　being　magnetized,　indicating　that　the　polarization　was　suppressed　in　the　magnetic　domain　walls.　Under　a　magnetic　field　of　H　=　0.7　T,　Jm　and　Pr　decreased　by　6.1%　and　6.4%　respectively,　revealing　coupling　between　polarization　P　and　magnetic　field　H.　The　magnetic　properties　of　BiFeO3　were　improved　by　introducing　of　BaTiO3　and　the　magnetic　Neel　temperature　T-N　increased　by　70　K　because　of　structural　effects.