Five kinds of hydrophobic association hydrogel are synthesized with the method of free⁃radical solution polymerization, in which the hydrophilic monomer is acrylic amide (AM), hydrophobic monomers are octadecyl acrylate (C18) and dimethyacetamide(DMAC),the surfactants are lauryl sodium sulfate (SDS),tetrabutylammonium bromide (TBAB),cetyl trimethyl ammonium bromide (CTAB).The gas storage performance of CH4 and the water absorption capability for five hydrogels are measured. The experimental data has proven that the addition of TBAB or CTAB has a significant effect on the storage performance of hydrogels, and the best storage performance of CH4 is HC⁃SDS/TBAB. In addition,the addition of TBAB or CTAB has an obvious effect on the swelling ratio of hydrogel, and the swelling ratios of hydrogels with the addition of two kinds of surfactants are obviously lower than the one with the addition of a single surfactant (SDS).