The　complex　nonlinear　dynamic　behaviors　of　the　composite　bi-stable　plates　with　piezoelectric　patch　are　analyzed.　Based　on　the　Von　Karman　hypothesis　and　Hamilton＇s　principle,　the　nonlinear　dynamic　model　is　derived.　Temperature　and　piezoelectric　effect　are　also　considered　in　the　model.　Numerical　simulations　are　performed　to　study　the　nonlinear　vibration　response　of　the　composite　bi-stable　plate　using　the　Runge-Kutta　method.　The　analysis　of　the　phase　portrait,　waveforms　and　bifurcation　diagrams　of　numerical　simulations　shows　that　the　period,　multi-period　and　chaotic　responses　can　be　observed　with　the　variation　of　the　excitation　in　frequency　and　amplitude.　Copyright　©　2014　by　ASME.