Surface modified SiO2 nanoparticles, SCL@SiO2 were prepared by adsorbing sodium conjugated linoleate (SCL) on the surface of SiO2 nanoparticles, in which SCL molecules were stabilized through self-crosslinking by thermal polymerization at 80 oC and the surface wettability of SiO2 nanoparticles was improved. Zeta potential results showed that SCL was adsorbed and solidified on the surface of SiO2 nanoparticles by this way. Liquid paraffin/water type Pickering emulsion was stabilized by the SCL@SiO2 nanoparticles alone and more stable than conventional emulsion. Moreover, the adsorbed and polymerized SCL layer on the SCL@SiO2 nanoparticles was more stable than the simply SCL-adsorbed SiO2 nanoparticles, which causes sizes of both the SCL@SiO2 nanoparticles and the resulted Pickering emulsion droplets were pH-responsive.