A large-capacity juicer of the present invention comprises: a base； a first support and a second support spaced apart from each other in the longitudinal direction and provided on the base； a first hollow juicing body rotatably provided at the first support by an outer drum supporting shaft so as to be positioned between the first support and the second support, opened toward the second support, and having a plurality of discharge holes； a second juicing body capable of rotating on the second support by the outer drum supporting shaft and an eccentric inner drum supporting shaft and provided inside the first juicing body so as to be eccentric； and a driving means for driving the first juicing body and/or the second juicing body, wherein the first juicing body has an outer drum gear and the second juicing body has an inner drum gear making internal contact and engaging with the outer drum gear, and thus the outer drum gear and the inner drum gear are gear-coupled to each other such that the first juicing body and the second juicing body are driven.
