This　paper　investigates　the　multipulse　heteroclinic　bifurcations　and　chaotic　dynamics　of　a　laminated　composite　piezoelectric　rectangular　plate　by　using　an　extended　Melnikov　method　in　the　resonant　case.　According　to　the　von　Karman　type　equations,　Reddy＇s　third-order　shear　deformation　plate　theory,　and　Hamilton＇s　principle,　the　equations　of　motion　are　derived　for　the　laminated　composite　piezoelectric　rectangular　plate　with　combined　parametric　excitations　and　transverse　excitation.　The　method　of　multiple　scales　and　Galerkin＇s　approach　are　applied　to　the　partial　differential　governing　equation.　Then,　the　four-dimensional　averaged　equation　is　obtained　for　the　case　of　1:3　internal　resonance　and　primary　parametric　resonance.　The　extended　Melnikov　method　is　used　to　study　the　Shilnikov　type　multipulse　heteroclinic　bifurcations　and　chaotic　dynamics　of　the　laminated　composite　piezoelectric　rectangular　plate.　The　necessary　conditions　of　the　existence　for　the　Shilnikov　type　multipulse　chaotic　dynamics　are　analytically　obtained.　From　the　investigation,　the　geometric　structure　of　the　multipulse　orbits　is　described　in　the　four-dimensional　phase　space.　Numerical　simulations　show　that　the　Shilnikov　type　multipulse　chaotic　motions　can　occur.　To　sum　up,　both　theoretical　and　numerical　studies　suggest　that　chaos　for　the　Smale　horseshoe　sense　in　motion　exists　for　the　laminated　composite　piezoelectric　rectangular　plate.