The invention discloses low-
irritation cyhalothrin and a preparation method and application thereof, and belongs to the technical field of
pesticide preparations, the low-
irritation cyhalothrin comprises
silicon dioxide nanoparticles with the surfaces grafted with amphiphilic copolymers,
cyhalothrin and an anti-allergic
drug, the
silicon dioxide nanoparticles with the surfaces grafted with the amphiphilic copolymers are dispersed in a
solvent, and the anti-allergic
drug is added to the
silicon dioxide nanoparticles with the surfaces grafted with the amphiphilic copolymers to prepare the low-
irritation cyhalothrin. The preparation method comprises the following steps: taking
porous silicon dioxide nanoparticles as a carrier, modifying a layer of amphiphilic
polymer on the surface of
silicon dioxide in situ, then adding cyhalothrin and an anti-allergic
drug, continuously stirring, and
drying the obtained product to obtain the low-irritation cyhalothrin. The cyhalothrin and the anti-allergic drug are loaded in
silicon dioxide pore channels, and the anti-allergic agent is used in cooperation, so that the
skin irritation of the cyhalothrin is reduced. The cyhalothrin with low irritation provided by the invention is simple in preparation method, can be used as a cyhalothrin insecticide raw
medicine, and has relatively great market application potential.