The invention relates to a gene extraction device, in particular to a device for extracting genes of flying insects. The technical problem to be solved is to provide the device for extracting the genes of the flying insects. The device for extracting the genes of the flying insects comprises a rectangular frame, an operating screen, a first vertical plate, a first cross plate, a second cross plate, a left wing separation mechanism, a right wing separation mechanism and a DNA separation and extraction mechanism, wherein the operating screen is arranged at the left end of the rectangular frame;the left side of the top end of the rectangular frame is connected with the first vertical plate; the left wing separation mechanism is arranged on the inner left side of the rectangular frame; and the right wing separation mechanism is arranged on the inner right side of the rectangular frame. According to the device disclosed by the invention, completeness of wings of the insects is ensured, thewings are completely separated from the insect bodies, and the heads of the insect bodies are completely separated from active cells of the tail parts, so that the completeness of internal structuresof the insect bodies is ensured, and DNA is effectively separated from cell-attached proteins and cell organelles, and thus, a large quantity of accurate gene groups can be obtained, and experimentalaccidental effects are excluded.