As　the　novel　wind　turbine　tower　structure,　the　concrete-filled　double-skin　tubular　(CFDST)　wind　turbine　system　shows　an　excellent　mechanical　performance　compared　with　conventional　steel　tubes.　This　paper　performs　a　comprehensive　investigation　to　better　understand　structural　dynamics　and　aeroelasticity　of　CFDST　wind　turbine　system　against　typhoons.　A　series　of　aeroelastic　wind　tunnel　model　tests　are　initially　conducted,　featuring　the　tower-blade-nacelle　coupled　system　in　simulated　typhoon　fields.　Then,　a　two-way　coupled　numerical　model　is　developed,　by　applying　the　k-omega　SST　model　to　simulate　the　turbulent　flows　and　aerodynamic　loads　of　the　CFDST　wind　turbine　system.　The　effects　of　blade　rotation,　turbulence,　and　wind　speed　on　the　aerodynamic　characteristics　of　the　CFDST　wind　turbine　system　are　discussed　based　numerical　simulations.　The　results　indicate　that　the　dynamic　response　of　the　CFDST　wind　turbine　system　is　dominated　by　the　harmonic　excitation　from　blade　rotation　(i.e.,　1　P　and　3　P),　especially　in　the　crosswind　direction　(i.e.,　90　degrees　and　270　degrees).　The　structural　dynamic　response　would　be　significantly　amplified　with　the　increasing　reduced　wind　speed　and　turbulence　intensity.　Consequently,　the　maximum　mean　and　fluctuating　wind　pressure　coefficients　rise　up　to　4.23　and　3.2,　respectively,　at　Iuu=　24　%　and　Ur=　10.7.　Correspondingly,　the　RMS　values　of　lift　and　drag　coefficients　reach　maximum　values　of　0.38　and　1.15,　respectively.　This　study　gains　insight　into　the　aerodynamic　behavior　of　the　integrated　wind　turbine　system　with　CFDST　tower.