Predicting　the　nonlinear　vibration　responses　of　a　Z-shaped　folding　wing　during　the　morphing　process　is　a　prerequisite　for　structural　design　analysis.　Therefore,　the　present　study　focuses　on　the　nonlinear　dynamical　characteristics　of　a　Z-shaped　folding　wing.　The　folding　wing　is　divided　into　three　carbon　fiber　composite　plates　connected　by　rigid　hinges.　The　nonlinear　dynamic　equations　of　the　system　are　derived　using　Hamilton＇s　principle　based　on　the　von　Karman　equations　and　classical　laminate　plate　theory.　The　mode　shape　functions　of　the　system　are　then　obtained　using　finite　element　analysis.　Galerkin＇s　approach　is　employed　to　discretize　the　partial　differential　governing　equations　into　a　two-degree-of-freedom　nonlinear　system.　The　case　of　1:　1　inner　resonance　is　considered.　The　method　of　multiple　scales　is　employed　to　obtain　the　averaged　equations　of　the　system.　Finally,　numerical　simulation　is　performed　to　investigate　the　nonlinear　dynamical　characteristics　of　the　system.　Bifurcation　diagrams　and　wave-form　diagrams　illustrate　the　different　motions　of　the　Z-shaped　folding　wing,　including　periodic　and　chaotic　motions　under　given　conditions.　The　influence　of　transverse　excitations　on　the　bifurcations　and　chaotic　motion　of　the　Z-shaped　folding　wing　is　investigated　numerically.