A kind of anti-escaping structure of melon drosophila melanogaster trapper,Wherein,Trapper system has a transparent vessel,And transparent vessel upper end forms an opening and provides installation one lid,The lid centre is equipped with a perforation,And set in mousetrap cell merging transparent vessel through perforation group,And lid upper end is then equipped with a column along perforation,There is provided installation one cover,And a dark layer is equipped on the inside of cover,The perforation periphery of lid is equipped with several perforation again,And it is integrally extended with the tapered pipeline being in gradually-reducing shape inside,By above structure,It provides one and is easy to fly into the anti-escaping effect for being but difficult to fly out,So that the doubt for avoiding fly worm from flying out again,The trapping efficiency of fly worm is substantially improved.一種瓜果蠅誘捕器之防脫逃結構，其中，誘捕器係具有一透明容器，且透明容器上端形成一開口提供安裝一蓋體，該蓋體中央處設有一貫孔，並透過貫孔組設一誘捕單元置入透明容器內，而蓋體上端則沿著貫孔設有一結合柱，提供安裝一罩體，且罩體內側設有一暗色層，又蓋體之貫孔周邊設有若干穿孔，並往內一體延伸有呈漸縮狀之錐型管道，藉由上述結構，即提供一容易飛入卻難以飛出之防脫逃效果，俾能避免蠅蟲再飛出之疑慮，大幅提升蠅蟲之誘捕效率。
