This　paper　investigates　the　complex　nonlinear　vibrations　and　internal　resonance　of　the　rotating　blade　subjected　to　the　aerodynamic　force,　which　is　simplified　to　a　pretwisted　rotating　cantilever　rectangular　plate　with　the　varying　cross-section　and　varying　rotating　speed.　Considering　the　effects　of　the　cross-section　warping,　pretwisted　and　presetting　angles,　the　nonlinear　partial　differential　governing　equations　of　motion　are　established　based　on　the　third-order　shear　deformation　theory,　von　Karman　large　deformation　theory　and　Hamilton　principle.　Two-degree-of-freedom　nonlinear　ordinary　differential　equations　of　motion　are　obtained　by　using　Galerkin　method.　The　method　of　multiple　scales　is　applied　to　obtain　the　averaged　equations　under　the　case　of　the　primary　parametric　resonance-1/2　subharmonic　resonance　and　1:2　internal　resonance.　Numerical　simulations　are　performed　to　portray　the　amplitude-frequency　response　and　amplitude-force　response　curves,　bifurcations　and　chaotic　dynamics　of　the　pretwisted　rotating　cantilever　rectangular　plate　by　discussing　the　influences　of　the　aerodynamic　force　and　rotating　speed　perturbation.　The　bifurcation　diagrams,　maximum　Lyapunov　exponents,　phase　portraits,　waveforms　and　Poincare　maps　are　utilized　to　illustrate　the　complex　nonlinear　vibrations　of　the　pretwisted　rotating　cantilever　rectangular　plate.