Preparation method of dimethomorph compounded cyazofamid suspending agent, suspending agent and application

The invention belongs to the technical field of pesticide preparations, and particularly relates to a preparation method of a dimethomorph compounded cyazofamid suspending agent, the suspending agent and application. The preparation method of the dimethomorph compounded cyazofamid suspending agent comprises the following steps: S1, obtaining a novel cyazofamid active compound; s2, preparing a xanthan gum aqueous solution; s3, preparing a frosted material; and S4, obtaining the dimethomorph compounded cyazofamid suspending agent. According to the preparation method disclosed by the invention, in preparation and production, the cyazofamid is firstly treated by a special process to obtain a novel cyazofamid active compound, then the novel cyazofamid active compound is matched with the dimethomorph, the wetting dispersant, the thickening agent, the stabilizer, the defoaming agent, the penetration enhancer and the deionized water to prepare a sanding material, and finally, the 1-2% xanthan gum aqueous solution is