The present invention relates to the plants of specific delivery agricultural chemicals. It include substantially at least one bond area by targeting agent is that a kind of binding site specifically bound on complete living plant and agricultural chemicals combine agricultural chemicals more particularly, it relates to a kind of composition. The present invention is further directed to a kind of specifically binding structural domain in conjunction with the binding site on the complete living plant. More particularly, to binding structural domain amino acid sequence include it is a kind of comprising 4 and 3 framework region complementation measurement region or its any suitable segment, wherein the binding structural domain can make carrier combination or be retained in an equipment. In a kind of preferred embodiment, the present invention relates to binding structural domains, specifically combine epidermal hair, stomata, cuticula, hole skin, pierce, ridge, Gen Mao or wax coat. The present invention is further directed to for delivering chemicals to plant in the equipment for improving deposition agricultural chemicals the plant of the agricultural chemicals of the fixed device it include the binding domain using target agent, and for protecting life or plants against abiotic adverse circumstance or control plant growth application. Moreover, it relates to be used to prepare selectively targeted agricultural chemicals carrier.