The invention relates to a pesticide composite, which consists of a component A and a component B, wherein the component A is fenpyroximate, and the component B is selected from one of bifenthrin and clofentezine. A formulation screening test result shows that the respective combination of either the fenpyroximate and the bifenthrin or the fenpyroximate and the clofentezine, according to a certain proportion, can generate obvious synergism on orange red spiders. The pesticide composite can be prepared into an emulsifiable concentrate, an aqueous emulsion, a microemulsion, a suspending agent, a water dispersible granule and a wettable powder. The composite has the advantages of overcoming and deferring the drug resistance of the pests, enlarging a control spectrum, killing acaridan quickly, reducing medication cost and lightening toxicity, thus being particularly suitable for controlling resistant red and white spiders. The effect of the composite is obviously higher than the single-dose use of pesticides.