Preparation and surface activity of 2-methyl-2-perfluorononenyloxyethoxycarbonyl ethyl- methyldipolyethoxylsilicane (V) were investigated. 2-methyl-2-perfluorononenyloxyethoxycarbonyl ethyl methyldichlorosilicane (III) was synthesized from 2-perfluorononenyloxyethyl methacrylate （I）and methyldichlorosilicane (II) by hydrosilication in the presence of H2PtCl6. III reacted with polyglycol （IV）to give non-surfactant V which was characterized by FTIR and MS. its surface activities were investigated. The critical micelle concentration (CMC) of aqueous solution of V was 0.22 g/L, surface tension of which at CMC (γcmc) was 19.5 mN/m. The reaction conditions of hydrosilication were optimized. n (I ): n (II) = 1∶1.2, I and II reacted in THF at 50℃ in the presence of 20 ppm H2PtCl6 for 24h to give III at yield 68.0%. V is a fluorosilicon surfactant with high activity.