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By dispersing La1-xSrxMnO3 (LSMO) granule into PbZrxTi1-xO3 (PZT) matrix,the 0-3 type LSMO/PZT composite film is synthesized through chemical solution method.The asymmetry of the top and bottom electrodes introduces novel electrostatic screening on LSMO/PZT interface.As electric polarization is switched between upward and downward orientations,the evolution of exchange bias,diode transport,and magnetoresistance is observed.The result implies the electrostatic switch of magnetic core-shell in the present film.In detail,as the spontaneous polarization is upward or downward in the PZT matrix,the ferromagnetic/antiferromagnetic or ferromagnetic/ferromagnetic core-shell structure is formed in LSMO granule,respectively.This work would develop a novel device for spintronics and metamaterial.