The　flexible　structure　may　generate　fluid-structure　coupled　vibration　in　the　wind　field.　At　this　time　its　noise　characteristics　are　more　complicated　than　the　aeroacoustics　of　the　rigid　structure　in　the　flow　field.　Through　the　acoustic　wind　tunnel　test,　the　noise　characteristics　of　different　flexible　thin　plate-wing　models　under　fluid　were　studied.　Experiments　show　that　with　the　increase　of　structural　flexibility,　the　OASPL　of　the　thin　wing　is　more　sensitive　to　changes　of　wind　speed　and　angle　of　attack.　The　spectral　characteristics　and　sound　source　position　of　the　flexible　plat-wing　noise　are　obviously　different　from　that　of　the　rigid　wing.　The　study　found　that　the　aeroacoustic　intensity　suddenly　and　remarkably　increases　at　a　specific　angle　of　attack　and　wind　speed.　The　preliminary　law　of　the　aeroacoustics　variation　of　the　plate-wing　under　the　fluid-solid　coupling　is　given,　which　provides　the　experimental　support　for　the　theoretical　analysis　and　numerical　simulation　of　the　relevant　fluid-structure　coupled　vibration　noise.　©　2019,　Science　Press.　All　right　reserved.