The Ultraviolet (UV)-curable organosilicon material has been synthesized by sol-gel method using polymethyl triethoxy silane(PTS), γ-methacryloyl propyl trimethoxyl silane (KH570), dimethyldiethoxysilane(DDS) as a raw material and HCl as catalyst. The obtained materials were characterized by means of FT-IR, 29Si-NMR, and studied the degree of siloxane condensation of organosilicon and the conversation rate of C=C double bonds after UV curing. The results showed that the UV-curing system composed of Irgacure369 has higher curing rate than that with other photoinitiators, The conversation rate of C=C double bonds of organosilicon has reached 95.89% after UV-cured with Irgacure369. When the concentration of the photoinitiator is 2% and the illumination time is 15s, the best result can be obtained.