The utility model discloses a simple and easy rice plot experiment field trichogrammatid release, the device include the canopy hood, and canopy hood bottom surface top center department studs with the nut. The canopy hood below is round tray, and the hemisphere face bee card cover of being made by the silk screen is equipped with in round tray top surface center department, and round tray centreof a circle department opens has the centre bore, and the access opening the same with the centre bore diameter is also opened at hemisphere face bee card cover top. The upper end of bracing piece ispassed from centre bore sum channel hole, nut screw -thread fit on top and the canopy hood bottom surface. The symmetry is fixed with three to four jacks rings on hemisphere face bee card cover roundtray top surface all around, corresponds the department on the square canopy hood bottom surface above that and also is fixed with the same jack ring, and insert in the jack ring of upper and lower correspondence at the bracing piece both ends. The beneficial effects of the utility model are that: the device simple structure, installation convenient to use has very strong practicality.