This　paper　analytically　and　numerically　investigates　the　dynamical　characteristics　of　a　fractional　Duffing-van　der　Pol　oscillator　with　two　periodic　excitations　and　the　distributed　time　delay.　First,　we　consider　the　pitchfork　bifurcation　of　the　system　driven　by　both　a　high-frequency　parametric　excitation　and　a　low-frequency　external　excitation.　Utilizing　the　method　of　direct　partition　of　motion,　the　original　system　is　transformed　into　an　effective　integer-order　slow　system,　and　the　supercritical　and　subcritical　pitchfork　bifurcations　are　observed　in　this　case.　Then,　we　study　the　chaotic　behavior　of　the　system　when　the　two　excitation　frequencies　are　equal.　The　necessary　condition　for　the　existence　of　the　horseshoe　chaos　from　the　homoclinic　bifurcation　is　obtained　based　on　the　Melnikov　method.　Besides,　the　parameters　effects　on　the　routes　to　chaos　of　the　system　are　detected　by　bifurcation　diagrams,　largest　Lyapunov　exponents,　phase　portraits,　and　Poincare　maps.　It　has　been　confirmed　that　the　theoretical　predictions　achieve　a　high　coincidence　with　the　numerical　results.　The　techniques　in　this　paper　can　be　applied　to　explore　the　underlying　bifurcation　and　chaotic　dynamics　of　fractional-order　models.