Removal of hydrophobic organic contaminants (HOCs) from soil of low permeability by electroremedia-tion was investigated by using phenanthrene and kaolinite as a model system. Tween 80 was added into the purging solution in order to enhance the solubility of phenanthrene. The effects of pH on the assorption of phenanthrene and Tween 80 on kaolinite and he magnitude of S-potential of kaolinite were examined. respectively. The effects of electric field strength indicated by electric current on the electroremediation investigated. respectively Incase of an electric field of 25mA applied for 72 hours, overs 90% of phenanthrene was removed from 424g (dry mass) of kaolinite at an energy consumption of 0.148 kW.h. The experimental results described in prcsent study show that the addition of surfactant into purging solution greatlky enhances the removal of HOCs by electroremediation.