Agricultural Organic Silicone is a modified Trisiloxane, and is an organic silicone surfactant with super ability of spreading. It makes the water surface tension lower down to 20.5mN/m at the concentration of 0.1%(wt.), After the mixture with the pesticide solution at the certain proportion, it can lower the contact angle between the spray and foliage, which can enlarge the coverage of the spray. Furthermore, Agricultural Organic Silicone 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.