The utility model discloses a biology draws technical field's a plant DNA extraction element, which comprises a housin, the right -hand member of casing is connected with absorbs sharp mouth, the right -hand member of absorbing sharp mouth is arc design, the inner chamber of casing is provided with sealed flexure strip, and the edge of sealed flexure strip and the inner chamber fixed connection of casing, the left side wall connection of sealed flexure strip has the stripper plate, the left side wall connection of stripper plate has the push rod, the top and the bottom of push rod all are provided with the slider, the top and the bottom of push rod all are provided with the support frame, and the interior wall connection of the other end of support frame and casing, the left side wall connection of support frame has reset spring, the left end of push rod is connected with the backup pad, this plant DNA extraction element, and simple structure, the leakproofness is better, and is less to plant cell DNA's damage, the suitable popularization.