Bi0.8Ba0.2FeO3/La0.7Sr0.3MnO3　multiferroic　heterostructures　are　successfully　synthesized　on　single　crystal　LaAlO3(100)　substrates　by　pulsed　laser　deposition　via　adjusting　the　parameters　of　laser　energy,　laser　frequency,　substrate　temperature,　oxygen　pressure,　distance　between　substrate　and　target,　etc.　The　pure　phase　with　perovskite　structure　is　confirmed　by　the　X-ray　diffraction　measurements.　Using　high-resolution　transmission　electron　microscopy　and　energy　dispersive　X-Ray　spectroscopy,　we　find　that　all　the　layers　show　preferential　(00l)　orientation,　suggesting　the　epitaxial　growth　of　the　multilayered　structure.　Isothermal　(7　K)　M-H　curves　measured　on　sample　after　cooling　the　sample　under　+/-　1　T　fields　reveal　a　shift　in　M-H　loop.　The　strong　temperature　dependence　of　H-EB　is　likely　to　be　directly　related　to　an　electronic　orbital　reconstruction　at　the　interface　and　complex　interplay　between　orbital　and　spin　degrees　of　freedom.