The　bifurcations　and　chaotic　dynamics　of　a　simply　supported　symmetric　cross-ply　composite　laminated　piezoelectric　rectangular　plate　are　studied　for　the　first　time,　which　are　simultaneously　forced　by　the　transverse,　in-plane　excitations　and　the　excitation　loaded　by　piezoelectric　layers.　Based　on　the　Reddy＇s　third-order　shear　deformation　plate　theory,　the　nonlinear　governing　equations　of　motion　for　the　composite　laminated　piezoelectric　rectangular　plate　are　derived　by　using　the　Hamilton＇s　principle.　The　Galerkin＇s　approach　is　used　to　discretize　partial　differential　governing　equations　to　a　two-degreeof-freedom　nonlinear　system　under　combined　the　parametric　and　external　excitations.　The　method　of　multiple　scales　is　employed　to　obtain　the　four-dimensional　averaged　equation.　Numerical　method　is　utilized　to　find　the　periodic　and　chaotic　responses　of　the　composite　laminated　piezoelectric　rectangular　plate.　The　numerical　results　indicate　the　existence　of　the　periodic　and　chaotic　responses　in　the　averaged　equation.　The　influence　of　the　transverse,　in-plane　and　piezoelectric　excitations　on　the　bifurcations　and　chaotic　behaviors　of　the　composite　laminated　piezoelectric　rectangular　plate　is　investigated　numerically.