Liquid organosilicon is easy to produce "atomization" in the process of high-speed coating. Cross-linked organosilicon polydimethylsiloxane viscoelastic liquids was adopted as anti-fogging agent synthesized by and hydrogen-containing polysiloxane, and further studied the influence of the network structure on the anti-fogging efficiency. The gel rate of anti-fogging agent was affected by the molar ratio of n(C=C)∶n(Si-HSi—H) in polysiloxane. When the relative molecular mass of vinyl-terminated polydimethylsiloxane increased from 5759 g/mol to 33750 g/mol, the anti-fogging efficiency increased from 85.9% to 95.9%. When the hydrogen content of hydrogen-containing polysiloxane is 5.5 mmol/g, it is more conducive to the improvement of anti-fogging efficiency. These factors will affect the crosslinking network structure of anti-fogging agent, while low cross-linking density and orderly cross-linking structure will improve anti-fogging efficiency.