Dinotefuran suspending agent and preparation method thereof

The invention provides a preparation method of a dinotefuran suspending agent. In terms of total weight of the dinotefuran suspending agent being 100%, the dinotefuran suspending agent is prepared from following components in percentage by weight: 5%-25% of dinotefuran, 15%-40% of a non-aqueous solvent, 5%-15% of an emulsifier, 2%-4% of a wetting dispersant, 1%-3% of a thickening agent, 2%-5% of an antifreezing agent, 0.1%-0.3% of a preservative, 0-0.3% of a pH regulator and the balance of water. The preparation method of the dinotefuran suspending agent comprises steps as follows: dinotefuran, the non-aqueous solvent, the emulsifier, the wetting dispersant, the antifreezing agent and the preservative are mixed and then subjected to sanding treatment, and a dinotefuran dispersible oil suspension is prepared; after the dinotefuran dispersible oil suspension is mixed with water, stirring treatment is continued, and O/W suspended emulsion is obtained; the thickening agent which is hydrated in advance is added to