The　analysis　of　dynamic　characteristics　is　crucial　in　the　design　of　wind　tower　structures.　The　dynamic　behavior　of　wind　towers　is　primarily　influenced　by　structural　stiffness　and　mass　distribution.　In　particular,　the　segment　thickness　of　prefabricated　concrete　towers　should　be　selected　and　optimized　based　on　computed　results　of　stress　distribution　in　order　to　achieve　the　desired　dynamic　performance.　The　main　objective　of　this　research　is　to　investigate　the　effects　of　design　factors,　such　as　segmental　thickness　and　top　mass　of　wind　blades,　hub,　and　nacelle,　on　the　natural　frequencies　and　vibration　modes　of　the　precast　concrete　towers.　For　the　finite　element　analysis,　a　high-rise　wind　turbine　tower　with　a　hub　height　of　120　m　(HH120　tower)　is　utilized.　Finally,　the　theoretical　model　for　the　reduced　degrees　of　freedom　system　is　validated　using　the　results　from　the　finite　element　analysis.