A rolling apparatus for a secondary battery electrode sheet , comprising: a transfer unit transferring an electrode sheet having an electrode mixture layer applied to at least one surface thereof in a first direction (A); a rolling roll pressing the electrode sheet in a second direction (B), intersecting the first direction (A); and a support portion coupled to a rotational axis of the rolling roll to support rotation of the rolling roll , wherein the rolling roll has a shape in which a central portion thereof in an axial direction protrudes further toward the electrode sheet than both end portions thereof in an axial direction, characterized in that the rolling roll is formed to have a diameter in a range of 450 mm to 550 mm, wherein the support portion comprises: a first support portion disposed outside the rolling roll in a longitudinal direction of the rotational axis, the first support portion including a first bearing that is pressed in a direction in which the rolling roll presses the electrode sheet , and a first housing in which the first bearing is accommodated; and a second support portion disposed outside the first support portion in a longitudinal direction of the rotational axis, the second support portion including a second bearing that is pressed in a direction, opposite to the direction in which the first bearing is pressed, and a second housing in which the second bearing is accommodated, wherein the first bearing comprises a four-row roller bearing. a transfer unit transferring an electrode sheet having an electrode mixture layer applied to at least one surface thereof in a first direction (A); a rolling roll pressing the electrode sheet in a second direction (B), intersecting the first direction (A); and a support portion coupled to a rotational axis of the rolling roll to support rotation of the rolling roll , wherein the rolling roll has a shape in which a central portion thereof in an axial direction protrudes further toward the electrode sheet than both end portions thereof in an axial direction, characterized in that the rolling roll is formed to have a diameter in a range of 450 mm to 550 mm, wherein the support portion comprises: a first support portion disposed outside the rolling roll in a longitudinal direction of the rotational axis, the first support portion including a first bearing that is pressed in a direction in which the rolling roll presses the electrode sheet , and a first housing in which the first bearing is accommodated; and a second support portion disposed outside the first support portion in a longitudinal direction of the rotational axis, the second support portion including a second bearing that is pressed in a direction, opposite to the direction in which the first bearing is pressed, and a second housing in which the second bearing is accommodated, wherein the first bearing comprises a four-row roller bearing. a first support portion disposed outside the rolling roll in a longitudinal direction of the rotational axis, the first support portion including a first bearing that is pressed in a direction in which the rolling roll presses the electrode sheet , and a first housing in which the first bearing is accommodated; and a second support portion disposed outside the first support portion in a longitudinal direction of the rotational axis, the second support portion including a second bearing that is pressed in a direction, opposite to the direction in which the first bearing is pressed, and a second housing in which the second bearing is accommodated, wherein the first bearing comprises a four-row roller bearing. <EOS>