The　global　bifurcation　and　multi-pulse　chaotic　dynamics　of　the　four-edge　simply　supported　composite　laminated　piezoelectric　rectangular　plate　under　in-plane　and　transversal　excitations　are　studied.　Based　on　the　model　of　von　Karman　type　equations　for　the　geometric　nonlinearity　and　the　ReddyaˆTMs　third-order　shear　deformation　theory,　the　formulas　of　motion　for　composite　laminated　piezoelectric　rectangular　plate　subjected　to　the　in-plane　and　transversal　excitations　are　derived.　Then　the　Galerkin　method　is　employed　to　discretize　the　partial　differential　equations　and　the　non-autonomous　ordinary　differential　equations　with　three-degree-of-freedom　are　derived.　The　extended　Melnikov　method　is　improved　to　investigate　the　six-dimensional　non-autonomous　nonlinear　dynamical　system　in　mixed　coordinate　and　the　global　bifurcation　and　multi-pulse　chaotic　dynamics　of　the　composite　laminated　piezoelectric　rectangular　plate　are　studied.　The　multi-pulse　chaotic　motions　of　the　composite　laminated　piezoelectric　rectangular　plate　are　found　from　the　numerical　simulation　which　further　verifies　the　result　of　theoretical　analysis.　Copyright　©　2012　by　ASME.