A juice extractor body, comprising: a rotating shaft; and a flexible blade (23, 231, 232) that is arranged around the rotating shaft, a longitudinal direction thereof being coincident with an axial direction of the rotating shaft; wherein one end (23a, 231a, 232a) in the longitudinal direction of the flexible blade (23, 231, 232) is configured to be slidable in the axial direction of the rotating shaft; characterized in that: the juice extractor body comprises a blade guide (25, 25A) that is provided at an intermediate position in the longitudinal direction of the flexible blade (23, 231, 232), wherein the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232) is slidable toward and away from the blade guide (25, 25A); wherein the other end (23b, 231b, 232b) in the longitudinal direction of the flexible blade (23, 231, 232) is attached to an axis member that extends from the blade guide (25, 25A) to the other end (23b, 231b, 232b) side of the flexible blade (23, 231, 232) or to the rotating shaft, and the flexible blade (23, 231, 232) changes from a form in which the flexible blade (23, 231, 232) is linearly extended to a form in which the flexible blade (23, 231, 232) is bent and outwardly expanded or vice versa, between the other end (23b, 231b, 232b) of the flexible blade (23, 231, 232) and the blade guide (25, 25A), in association with the sliding of the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232). a rotating shaft; and a flexible blade (23, 231, 232) that is arranged around the rotating shaft, a longitudinal direction thereof being coincident with an axial direction of the rotating shaft; wherein one end (23a, 231a, 232a) in the longitudinal direction of the flexible blade (23, 231, 232) is configured to be slidable in the axial direction of the rotating shaft; characterized in that: the juice extractor body comprises a blade guide (25, 25A) that is provided at an intermediate position in the longitudinal direction of the flexible blade (23, 231, 232), wherein the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232) is slidable toward and away from the blade guide (25, 25A); wherein the other end (23b, 231b, 232b) in the longitudinal direction of the flexible blade (23, 231, 232) is attached to an axis member that extends from the blade guide (25, 25A) to the other end (23b, 231b, 232b) side of the flexible blade (23, 231, 232) or to the rotating shaft, and the flexible blade (23, 231, 232) changes from a form in which the flexible blade (23, 231, 232) is linearly extended to a form in which the flexible blade (23, 231, 232) is bent and outwardly expanded or vice versa, between the other end (23b, 231b, 232b) of the flexible blade (23, 231, 232) and the blade guide (25, 25A), in association with the sliding of the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232). the juice extractor body comprises a blade guide (25, 25A) that is provided at an intermediate position in the longitudinal direction of the flexible blade (23, 231, 232), wherein the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232) is slidable toward and away from the blade guide (25, 25A); wherein the other end (23b, 231b, 232b) in the longitudinal direction of the flexible blade (23, 231, 232) is attached to an axis member that extends from the blade guide (25, 25A) to the other end (23b, 231b, 232b) side of the flexible blade (23, 231, 232) or to the rotating shaft, and the flexible blade (23, 231, 232) changes from a form in which the flexible blade (23, 231, 232) is linearly extended to a form in which the flexible blade (23, 231, 232) is bent and outwardly expanded or vice versa, between the other end (23b, 231b, 232b) of the flexible blade (23, 231, 232) and the blade guide (25, 25A), in association with the sliding of the one end (23a, 231a, 232a) of the flexible blade (23, 231, 232).