Supercritical fluid extractions of phenol and naphthalene from soil have been performed in the modes of batch, slurry and continuous. In batch extraction, the equilibrium distribution coeffi- cients of phenol between soil and supercritical phases increased with temperature and pressure. In slurry extraction, concentration of phenol in soil phase decreased with pressure while thast of naphthalene increased with pressure. In continuous extraction, the amount of extract was maximum at high pressure in the initial stage of phenol extraction, and the crossover phenomena was observed. The extraction of naphthalene decreased with pressure, which verified the increased adsorption of naphthalene to soil at high pressure. In binary contaminant extraction, the extraction percentage of phenol was constant compared to single contaminant extraction, while that of naphthalene remarkably decreased.