Disclosed is a high-capacity juice extractor including: a base； first and second supports which are spaced apart from each other in a longitudinal direction, and are provided on the base； a first extracting member which is a hollow cylinder opened toward the second support, is positioned between the first support and the second support, is rotatably supported on the first support by an outer casing support shaft, and is formed with a plurality of outlet ports； a second extracting member which is rotatably supported on the second support by an inner casing support shaft which is eccentric to the outer casing support shaft, and is positioned in the first extracting member to be eccentric to the first extracting member； and a driving member configured to drive at least one of the first extracting member and the second extracting member, the first extracting member having an outer casing gear, the second extracting member having an inner casing gear which is meshed with the outer casing gear, and the first extracting member and the second extracting member are rotated by gear engagement of the outer casing gear and the inner casing gear.
