A kind of fly-catching device,System's lid is set on what dustbin to lure the fly-catching device for catching and grabbing drosophila cause and reaching elimination； The fly-catching device system has a lid,The lid centre system is equipped with a recessed cabin,And the what cabin system is equipped with a plurality of stomatas through the what lid bottom end； And a top cover,System's lid closes above the set cabin of the what lid； Again the top cover be centrally above equipped with a handle,It and around the what handle is equipped with a plurality of through-holes around arrangements； And the through-hole system is presented in funnel kenel wide at the top and narrow at the bottom； Thereby,The top cover is arranged in pairs or groups in lid conjunction state in the cabin of the lid,And install the pest-catching device on the external dustbin of what,Smell is given out to lure drosophila via each through-hole of the top cover from each stomata of the lid by the rubbish inside dustbin and is entered from the cabin,Drosophila is set to can not be successfully the cabin that flies out,Drosophila is caused to be died of hunger in the what cabin because that can not be ingested,And then reach the effect of trapping drosophila and elimination.一種捕蠅裝置，係蓋設於垃圾桶上用以引誘捕抓果蠅致達到消滅之捕蠅裝置；該捕蠅裝置係具有一蓋體，該蓋體中央處係設有一呈凹陷狀之艙室，並於該艙室係設有複數個貫穿於該蓋體底端處之氣孔；及一頂蓋，係蓋合於該蓋體所設之艙室上方處；又該頂蓋上方中央處係設有一握把，並於該握把周圍處係設有複數個環繞排列之通孔；且該通孔係呈上寬下窄之漏斗型態呈現；藉此，該蓋體之艙室搭配該頂蓋呈蓋合狀態，並將該捕蟲裝置裝設於外來的垃圾桶上，藉由垃圾桶裡面的垃圾從該蓋體之各氣孔散發出氣味以引誘果蠅經由該頂蓋之各通孔而進入該艙室處，使果蠅無法順利飛出該艙室，導致果蠅因無法進行攝食而餓死於該艙室內，進而達到誘捕果蠅並消滅之效果。
