Based　on　the　third-order　shear　deformation　laminate　theory　of　Reddy,　the　six-dimensional　nonlinear　system　of　the　four-edge　simply　supported　rectangular　laminated　composite　piezoelectric　plates　was　studied,　which　are　subjected　to　in-plane　excitations,　out-plane　loads,　thermal　loads　and　piezoelectric　excitations.　Taking　into　account　that　in　the　averaged　equation　there　exist　eigenvalues　of　one　pair　of　double　zeros　and　two　pairs　of　pure　imaginaries,　the　theory　of　normal　form　was　used　to　reduce　the　six-dimensional　averaged　equation　into　a　simpler　form.　The　energy-phase　method　was　employed　to　study　the　global　bifurcations　and　chaotic　properties　of　the　six-dimensional　nonlinear　system　of　a　composite　laminated　plate.　The　global　analysis　indicates　that　there　exists　the　multi-pulse　jumping　of　homoclinic　orbits　in　the　system.　At　the　same　time,　numerical　simulation　was　used　to　investigate　the　nonlinear　characteristics　of　the　plate.　The　results　of　numerical　simulation　also　demonstrate　the　appearance　of　jumping　phenomena　of　orbits.