In this paper, publications from 1993 are classified according to the type of matrix from which the environmental analytes are extracted. Although the most applications of SFE are used for the solid, some analysts have concerned with aqueous and gaseous media. Various aspects of investigation of environmental potential carcinogen, such as, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, dioxins, pesticides, phenols and other hazardous and toxic pollutants in environmental samples have been reviewed with 55 references. The coupled techniques of SFE have also been introduced in this paper.