A foldable device comprising: a flexible display comprising a first portion, a second portion, and a third portion disposed between the first portion and the second portion; a body comprising a first support portion (210, 211) which supports the first portion of the flexible display, a second support portion (220, 221) which supports the second portion of the flexible display, and a third support portion (2150, 2151, 2153, 212, 222) which supports the third portion of the flexible display; a hinge comprising a first rotation axis which connects the first support portion (210, 211) to the third support portion, and a second rotation axis which connects the second support portion (220, 221) to the third support portion; a first slot hole which shifts the first rotation axis along a first inner surface of the first slot hole when the first support portion (210, 211) rotates; and a second slot hole which shifts the second rotation axis along a second inner surface of the second slot hole when the second support portion (220, 221) rotates, wherein the first rotation axis and the second rotation axis allow the first support portion (210, 211) and the second support portion (220, 221) to rotate with respect to the third support portion when the flexible display changes from an open state to a closed state, wherein the first slot hole is disposed on the first support portion (210, 211) and the third support portion and is rotatably coupled with the first rotation axis, and wherein the second slot hole is disposed on the second support portion (220, 221) and the third support portion and is rotatably coupled with the second rotation axis. a flexible display comprising a first portion, a second portion, and a third portion disposed between the first portion and the second portion; a body comprising a first support portion (210, 211) which supports the first portion of the flexible display, a second support portion (220, 221) which supports the second portion of the flexible display, and a third support portion (2150, 2151, 2153, 212, 222) which supports the third portion of the flexible display; a hinge comprising a first rotation axis which connects the first support portion (210, 211) to the third support portion, and a second rotation axis which connects the second support portion (220, 221) to the third support portion; a first slot hole which shifts the first rotation axis along a first inner surface of the first slot hole when the first support portion (210, 211) rotates; and a second slot hole which shifts the second rotation axis along a second inner surface of the second slot hole when the second support portion (220, 221) rotates, wherein the first rotation axis and the second rotation axis allow the first support portion (210, 211) and the second support portion (220, 221) to rotate with respect to the third support portion when the flexible display changes from an open state to a closed state, wherein the first slot hole is disposed on the first support portion (210, 211) and the third support portion and is rotatably coupled with the first rotation axis, and wherein the second slot hole is disposed on the second support portion (220, 221) and the third support portion and is rotatably coupled with the second rotation axis.