Suspending agent containing spinosad and emamectin benzoate and preparation method thereof

The invention provides a suspending agent containing spinosad and emamectin benzoate. The suspending agent is prepared from active ingredients, a dispersing agent, a wetting agent, a thickening agent, an anti-freezing agent, a defoaming agent, a preservative and a synergist, the active ingredients are spinosad and methylamino abamectin benzoate; the mass ratio of the spinosad to the emamectin benzoate is (0.05 to 50): (0.05 to 10). According to the invention, by screening a large number of auxiliaries and optimizing the scheme aiming at different raw medicines, a system with the best matching degree among the components, especially the combination of the wetting agent, the dispersing agent and the synergist, is finally obtained, so that the stability and the tolerance of the product are greatly improved; the water-based suspension liquid has the advantages of good dispersibility, high suspension rate, capability of meeting different water qualities, relatively low surface tension and the like, and effectively