In　this　paper,　a　three-dimensional　finite　element　model　of　bracket-line　coupling　system　is　established　based　on　ANSYS　software.　Using　the　wind　velocity　time　series　which　is　generated　by　MATLAB　as　a　power　input,　by　comparing　and　analyzing　the　influence　of　different　wind　speeds　and　different　wind　attack　angles,　it　is　found　that　when　0　degree　wind　acts　on　the　structure,　wires　have　a　certain　damping　effect　in　the　bracket-line　coupling　system　and　at　the　same　wind　speed,　the　90　degree　direction　is　the　most　unfavorable　wind　direction　for　the　whole　structure　according　to　the　three　kinds　of　angle　wind　calculated　at　present.　In　the　bracket-line　coupling　system,　the　bracket　structure　is　more　sensitive　to　the　increase　of　wind　speed　while　the　conductors　are　more　sensitive　to　the　change　of　wind　attack　angle.　©　Published　under　licence　by　IOP　Publishing　Ltd.