A　local　resonant　phononic　crystal　plate,　which　is　composed　by　quadrangular　epoxy　resin　matrix　embedded　with　cylindrical　scatterers,　is　proposed　to　study　the　vibration　energy　harvesting　performance.　The　bandgaps　and　energy　concentration　characteristics　for　the　defect　state　structure　are　analyzed　in　detail.　Firstly,　the　bandgap　curve　and　energy　transmission　characteristics　are　analyzed　for　perfect　and　point　defect　phononic　plate　with　5　×　5　array　structure　based　on　supercell　theory　and　finite　element　method.　Considering　the　energy　concentration　characteristics　of　the　point　defect　local　resonance　phononic　crystal　structure,　piezoelectric　material　is　used　to　replace　the　scatterer　material　of　defect　point,　and　the　vibration　energy　characteristics　are　then　analyzed.　The　results　show　that　it　has　narrow　resonance　frequency　band　for　the　5　×　5　point　defect　supercell　structure.　In　order　to　improve　the　energy　capture　efficiency,　two　kind　of　new　phononic　crystal　plate　composed　of　three　5　×　5　supercells　with　different　defect　numbers　and　layout　are　proposed　as　the　vibration　energy　harvester.　According　to　the　results　of　the　electromechanical　coupling　analysis,　it　shows　that　the　proposed　local　resonant　phononic　crystal　plate　overcomes　the　disadvantages　of　the　single　point　defect　supercell　structure,　such　as　too　few　defect　modes　and　too　narrow　resonance　frequency　band.　The　working　frequency　band　of　the　energy　harvester　is　widened　and　the　output　voltage　is　increased.　Additionally,　it　can　further　broaden　the　energy　harvesting　bandwidth　and　achieve　better　efficiency　by　introducing　different　number　and　configuration　of　defect　states.　©　2021,　Chinese　Journal　of　Theoretical　and　Applied　Mechanics　Press.　All　right　reserved.