Fatigue　analysis　of　hybrid　wind　turbine　towers　between　cut　in　wind　speed　and　cut　out　wind　speed　are　demonstrated.　Nominal　stress　method　and　miner　liner　accumulated　damage　theory　are　adopted.　Through　the　analysis　of　the　results,　comparative　research　on　effect　of　parameters　of　aspect　ratio,　height　ratio　and　unequal　legs　for　fatigue　properties　of　hybrid　wind　turbine　towers.　The　results　show　that　the　optimal　range　of　aspect　ratio　of　hybrid　towers　is　1/6-1/4,　the　optimal　range　of　height　ratio　of　hybrid　towers　is　0.60-0.67.　Fatigue　analysis　of　hybrid　towers,　should　select　the　right　junction　of　leeward　towers　and　the　S-N　curve　from　EN　1993-1-9.The　effect　of　unequal　legs　for　fatigue　properties　of　hybrid　towers　can　be　neglected.　©　2023　EDP　Sciences.　All　rights　reserved.