A method for extracting the valuable substances is provided to process a large quantity of biomass material by using the heated and pressurized liquid solvent, and extract the desired valuable substance from the biomass material. The apparatus(1) for extracting the valuable substances comprises (i) a raw material-mixing tub(2) for mixing and agitating the mixture containing biomass material and extraction solvent capable of solubilizing the valuable substances in the biomass material, (ii) a reactor(3) for heating the mixture to the temperature that can extract the valuable substances and extracting the valuable substances in the liquid phase under pressure more than the saturated vapor pressure of the extraction solvent, (iii) solid-liquid separating tool(4, 5, 6) for separating the solid material from the extract including the solid material which is extracted by the reactor, (iv) an evaporator(7) for distilling the extract in which the solid material is separated to separate the extraction solvent and valuable substances and (v) a condenser(8) for cooling and liquefying the extraction solvent for reuse.
