Three kinds of gel networks with different structures were studied via molecular dynamics(MD)simulation.Both the pressure and the self-diffusion coefficient of the solvent were investigated in detail,as well as the density distribution of the solvent in different regions of gel networks.The simulated results showed that the heterogeneity of gel structures had little influence on the properties of the solvent in the studied gel networks,although there was considerable difference between pure solvent and the solvent in the gel networks.