This　paper　presents　the　analysis　of　the　nonlinear　dynamics　for　a　composite　laminated　cantilever　rectangular　plate　subjected　to　the　supersonic　gas　flows　and　the　in-plane　excitations.　The　aerodynamic　pressure　is　modeled　by　using　the　third-order　piston　theory.　Based　on　Reddy＇s　third-order　plate　theory　and　the　von　Karman-type　equation　for　the　geometric　nonlinearity,　the　nonlinear　partial　differential　equations　of　motion　for　the　composite　laminated　cantilever　rectangular　plate　under　combined　aerodynamic　pressure　and　in-plane　excitation　are　derived　by　using　Hamilton＇s　principle.　The　Galerkin＇s　approach　is　used　to　transform　the　nonlinear　partial　differential　equations　of　motion　for　the　composite　laminated　cantilever　rectangular　plate　to　a　two-degree-of-freedom　nonlinear　system　under　combined　external　and　parametric　excitations.　The　method　of　multiple　scales　is　employed　to　obtain　the　four-dimensional　averaged　equation　of　the　non-automatic　nonlinear　system.　The　case　of　1:2　internal　resonance　and　primary　parametric　resonance　is　taken　into　account.　A　numerical　method　is　utilized　to　study　the　bifurcations　and　chaotic　dynamics　of　the　composite　laminated　cantilever　rectangular　plate.　The　frequency-response　curves,　bifurcation　diagram,　phase　portrait　and　frequency　spectra　are　obtained　to　analyze　the　nonlinear　dynamic　behavior　of　the　composite　laminated　cantilever　rectangular　plate,　which　includes　the　periodic　and　chaotic　motions.