The new product of Guangzhou Shengtainuo, single ended vinyl silicone oil, is synthesized through non-equilibrium reaction using a linear body, which has the advantages of high vinyl single end rate (80% -90%), narrow molecular weight distribution, and excellent performance. By utilizing the characteristic of single ended active vinyl groups in the structure, the crosslinking density in the system is reduced, thereby achieving the effect of reducing the hardness of the cured system while maintaining a certain strength, reducing product viscosity, and improving oil leakage. It can be used in the direction of human silicone, mold glue, thermal conductive potting glue, thermal conductive gasket, thermal conductive gel, etc., which can slow down the oil leakage of the system, reduce the hardness of the system, or increase the filling amount of thermal conductive powder.