The product is made of bentonite and organic/inorganic modifier. It has swelling property, ion exchange ability and absorption capacity and so on. The modification of bentonite makes its carbon content increased, improves hydrophobic properties and the ability of organisms removal. Inorganic modifier transforms the mineral single crystal into associative structure in column and leads to a larger space among particles, which changes the dispersion state and properties of bentonite in water and improves the ability of absorption, ion exchange and integration.