The present invention discloses a continuous material extraction system for continuously extracting valuable components in the material by means of a solvent, the system comprising: an extraction tank which is a sealed container being substantially parallelepiped, wherein in the longitudinal direction of the extraction tank, the extraction tank has a first end at which a material inlet is provided, and a second end, and a material outlet is provided at the first end or the second end; the upper portion of said extraction tank is provided with a solvent inlet, and the lower portion of said extraction tank is provided with a solution outlet; in the longitudinal direction of said extraction tank, the lower portion of said extraction tank is provided with an extraction bath which is applied for accommodating the solvent and the material, wherein in the longitudinal direction of said extraction tank said extraction bath is provided with a material conveying mechanism and an ultrasonic generator. The present invention further discloses a method of extracting valuable components in the material by the continuous material extraction system mentioned above.