Agricultural Silicone Spreading and Penetrating Agent is an organic silicone surfactant with super ability of spreading.It makes the water surface tension lower down to the 20.5 mN/m at the concentration of 0.1 %(wt.). After the mixture with the pesticide solution at the certain proportion, it can lower the contact angel between the spray and foliage, which can enlarge the coverage of the spray. Furthermore, This Spreading and Penetrating Agent can make the pesticide absorbed through the stomatal of leaves, which is extremely effective for improving efficacy, reducing amount of pesticide, saving cost, reducing environmental pollution caused by pesticides.