The　global　bifurcations　and　multi-pulse　chaotic　dynamics　of　a　simply　supported　laminated　composite　piezoelectric　rectangular　thin　plate　under　combined　parametric　and　transverse　excitations　are　investigated　in　this　paper　for　the　first　time.　The　formulas　of　the　laminated　composite　piezoelectric　rectangular　plate　are　derived　by　using　the　von　Karman-type　equation,　the　Reddy＇s　third-order　shear　deformation　plate　theory　and　the　Galerkin＇s　approach.　The　extended　Melnikov　method　is　improved　to　enable　us　to　analyze　directly　the　non-autonomous　nonlinear　dynamical　system,　which　is　applied　to　the　non-autonomous　governing　equations　of　motion　for　the　laminated　composite　piezoelectric　rectangular　thin　plate.　The　results　obtained　here　indicate　that　the　multi-pulse　chaotic　motions　can　occur　in　the　laminated　composite　piezoelectric　rectangular　thin　plate.　Numerical　simulation　is　also　employed　to　find　the　multi-pulse　chaotic　motions　of　the　laminated　composite　piezoelectric　rectangular　thin　plate.