Abstract: Applications of vinyl triethoxysilane and primary synthesis methods are introduced in this paper. The preparation of 4A zeolite supported platinum catalyst，and its catalytic properties for hydrosilylation reaction of acetylene with triethoxysilane were studied. The influences of reaction conditions，such as reaction temperature，the volumetric ratio of raw materials，the quantity of Pt in the catalyst，the flow rate of acetylene，were discussed. The result showed that 4A zeolite supported platinum catalyst had good catalytic activity for hydrosilylation reaction of acetylene with triethoxysilane. The reaction was mild，and the catalyst could be reused.