With　the　development　of　materials　science,　more　and　more　new　materials　have　been　applied　to　engineering　practice.　Under　the　action　of　airflow　excitation,　the　nonlinear　dynamics　of　plate　and　shell　structures　with　composite　materials　based　on　aerospace　engineering　is　still　a　hot　research　topic.　In　this　work,　the　nonlinear　vibrations　and　responses　of　a　laminated　composite　cantilever　plate　under　subsonic　air　flow　are　investigated.　According　to　the　flow　condition　of　ideal　incompressible　fluid　and　the　Kutta-Joukowski　lift　theorem,　the　subsonic　aerodynamic　lift　on　the　three-dimensional　finite　length　flat　wing　is　calculated　by　using　the　Vertex　Lattice　(VL)　method,　which　is　applied　to　the　cantilever　plate.　The　finite　length　flat　wing　is　modeled　as　a　laminated　composite　cantilever　plate　based　on　the　Reddy＇s　third-order　shear　deformation　plate　theory,　moreover　the　von　Karman　geometry　nonlinearity　is　introduced.　The　nonlinear　partial　differential　governing　equations　of　motion　for　the　laminated　composite　cantilever　plate　subjected　to　the　subsonic　aerodynamic　force　are　established　via　Hamilton＇s　principle.　The　partial　differential　equations　are　separated　into　two　nonlinear　ordinary　differential　equations　via　Galerkin　method.　Through　comparing　the　natural　frequencies　of　the　system　with　different　material　and　geometry　parameters,　the　1:2　internal　resonance　is　considered　here　using　multiple　scales　method.　Corresponding　to　several　selected　parameters,　the　frequency-response　characteristics　are　obtained.　The　hardening-spring-type　behaviors　and　jump　phenomena　are　exhibited.　©　2019,　Editorial　Office　of　Chinese　Journal　of　Theoretical　and　Applied　Mechanics.　All　right　reserved.