The　analysis　on　the　chaotic　dynamics　of　a　six-dimensional　nonlinear　system　which　represents　the　averaged　equation　of　a　composite　laminated　piezoelectric　rectangular　plate　is　given　for　the　first　time.　The　theory　of　normal　form　and　the　energy-phase　method　are　combined　to　investigate　the　higher-dimensional　chaotic　dynamics　of　the　composite　laminated　piezoelectric　rectangular　plate.　Firstly,　the　theory　of　normal　form　is　used　to　reduce　the　six-dimensional　averaged　equation　to　the　simpler　normal　form.　Then,　the　energy-phase　method　is　extended　to　analyze　the　global　bifurcations　and　chaotic　dynamics　of　a　six-dimensional　nonlinear　system.　The　analysis　results　indicate　that　there　exist　the　homoclinic　bifurcation　and　Shilnikov　type　multi-pulse　chaos　for　the　composite　laminated　piezoelectric　rectangular　plate.　Finally,　numerical　simulations　are　also　used　to　investigate　the　nonlinear　dynamic　characteristics　of　the　composite　laminated　piezoelectric　rectangular　plate.　The　results　of　numerical　simulations　also　demonstrate　that　there　exist　the　chaotic　motions　and　the　multi-pulse　jumping　orbits　of　the　composite　laminated　piezoelectric　rectangular　plate.