In　this　paper,　bifurcation　and　chaos　of　a　parametrically　excited　viscoelastic　moving　belt　were　investigated.　Based　on　geometry　nonlinearity,　the　nonlinear　governing　equations　of　motion　for　the　viscoelastic　moving　belt　were　derived　by　Hamiltonian　principles.　Then,　the　Galerkin　method　was　used　to　discretize　the　governing　equations.　Finally,　the　Runge-Kutta　was　employed　to　analyze　the　nonlinear　dynamical　behaviors　of　the　belt.　The　numerical　results　indicate　that　bifurcation　and　chaos　occur　in　the　transverse　nonlinear　oscillations　of　the　parametrically　excited　viscoelastic　moving　belt.　In　addition,　the　dynamic　response　of　belt　varies　with　the　parameters.