A carrying device , comprising: a stand having a track structure and configured to allow an object to be detachably assembled thereon; an upper clamp connected to the stand ; a lower clamp assembled to the track structure and facing toward the upper clamp , wherein the lower clamp is movable along the track structure relative to the upper clamp , and the upper clamp and the lower clamp jointly define a receiving space (S) therebetween; a manipulation mechanism assembled to the stand and interlinked with the lower clamp , wherein the manipulation mechanism is configured to drive the lower clamp to move along the track structure ; and a supporting column assembled to the lower clamp , wherein the supporting column is movable relative to the lower clamp , so that the carrying device is adjustable to be in a first clamping mode or a second clamping mode; wherein, when the carrying device is in the first clamping mode, the supporting column is located in the receiving space (S), a free end portion of the supporting column faces toward the upper clamp , and the manipulation mechanism is configured to drive the lower clamp and the supporting column to move together, so that the free end portion and the upper clamp are capable of jointly clamping a plate part of a first structure ; wherein, when the carrying device is in the second clamping mode, the supporting column is located outside of the receiving space (S), the receiving space (S) is configured to receive a second structure being plate-shaped, and the manipulation mechanism is configured to drive the lower clamp to move, so that the lower clamp and the upper clamp are capable of jointly clamping the second structure , and wherein a thickness of the plate part of the first structure capable of being clamped by the carrying device in the first clamping mode is less than a thickness of the second structure capable of being clamped by the carrying device in the second clamping mode. a stand having a track structure and configured to allow an object to be detachably assembled thereon; an upper clamp connected to the stand ; a lower clamp assembled to the track structure and facing toward the upper clamp , wherein the lower clamp is movable along the track structure relative to the upper clamp , and the upper clamp and the lower clamp jointly define a receiving space (S) therebetween; a manipulation mechanism assembled to the stand and interlinked with the lower clamp , wherein the manipulation mechanism is configured to drive the lower clamp to move along the track structure ; and a supporting column assembled to the lower clamp , wherein the supporting column is movable relative to the lower clamp , so that the carrying device is adjustable to be in a first clamping mode or a second clamping mode; wherein, when the carrying device is in the first clamping mode, the supporting column is located in the receiving space (S), a free end portion of the supporting column faces toward the upper clamp , and the manipulation mechanism is configured to drive the lower clamp and the supporting column to move together, so that the free end portion and the upper clamp are capable of jointly clamping a plate part of a first structure ; wherein, when the carrying device is in the second clamping mode, the supporting column is located outside of the receiving space (S), the receiving space (S) is configured to receive a second structure being plate-shaped, and the manipulation mechanism is configured to drive the lower clamp to move, so that the lower clamp and the upper clamp are capable of jointly clamping the second structure , and wherein a thickness of the plate part of the first structure capable of being clamped by the carrying device in the first clamping mode is less than a thickness of the second structure capable of being clamped by the carrying device in the second clamping mode. <EOS>