The invention provides an agricultural insecticidal composition for preventing and controlling Pyrausta nubilalis, and relates to the technical field of pesticides, wherein the agricultural insecticidal composition contains a component A, a component B, an agriculturally acceptable carrier and an auxiliary agent, the component A comprises chlorfluazuron,
emamectin benzoate,
oxymatrine and
chelerythrine hydrochloride, and the component B comprises
beauveria bassiana and
bacillus thuringiensis. According to the invention, the agricultural insecticidal composition has excellent preventing and treating effects on Pyrausta nubilalis in corn straws; the raw materials are scientifically blended, so that the
advantage complementation effect is achieved, the insecticidal efficiency is improved, thehalf lethal time of pests is obviously shortened, the high synergistic effect can be generated among the raw materials, the
drug resistance of pests is overcome and delayed, the prevention and control spectrum is expanded, and the
drug cost is reduced; and the insecticidal composition is used for preventing and controlling Pyrausta nubilalis, can be used for preventing and controlling pests of other crops, and has advantages of good fast-acting property, stable prevention and
control effect, environmental friendliness and the like.