The utility model relates to a with a dissection device of stiff aphid of aphidiidae, fixed mounting has vertical backplate on one side of workstation, and the top of vertically propping up the backplate is connected with a horizontal backplate, transversely props up the bottom surface of backplate and installs the shadowless lamp, and the shadowless lamp is connected with external power source through the power connecting wire, and the center part of the workstation upper surface below the shadowless lamp is provided with the accurate device of dissecting, be provided with the magnifying glass support at the working plate upside, magnifying glass support upper portion is connected with universal pipe, and universal pipe's end connection has the magnifying glass, adopts realize the smilingdissection of object of magnifying glass and shadowless lamp, has improved accuracy and work efficiency, adopts the double -sided tape circle to realize the fixed of object simultaneously, has improved feasibility and stability when operating, adopts stiff aphid to paste the dissection and dissects the observation to different developmental stage's stiff aphid, dissect efficient, weak point consuming time, the complete degree of worm attitude is high.